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2001 Grand Cherokee
Need some advice about my 2001 Grand Cherokee limited with 83,000
miles on it. I purchased it new, it was demo and took very good care of it changing oil ever 3000 miles. Also kept up the maintenance according to the manual. The place (not the dealer!) where I get the fluids changed recommended that I consider changing to synthetic oil . I was told there is a special oil for engines over 75,000 miles. Anyone have any advice/experience about using or changing to synthetic oil? I am also wondering about how long the 4.7l engine is generally good for. In the past in this group I have heard that GCs tend to start needing expensive work soon after 100,000 miles. Any experiences with long engine life? Thanks in advance. Larry |
#2
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2001 Grand Cherokee
"Larry" > wrote in message ... > Need some advice about my 2001 Grand Cherokee limited with 83,000 > miles on it. > > I purchased it new, it was demo and took very good care of it changing > oil ever 3000 miles. Also kept up the maintenance according to the > manual. > > The place (not the dealer!) where I get the fluids changed recommended > that I consider changing to synthetic oil . I was told there is a > special oil for engines over 75,000 miles. > > Anyone have any advice/experience about using or changing to synthetic > oil? > > I am also wondering about how long the 4.7l engine is generally good > for. In the past in this group I have heard that GCs tend to start > needing expensive work soon after 100,000 miles. > > Any experiences with long engine life? > > Thanks in advance. > > Larry > > > Most of the "special" oils for high mileage engines are aimed at non-roller lifter engines (solid lifter or old style hydraulic lifters) and contain zinc additives to lube the cam and lifter contact points ... actually, they're just old timey oils with a higher pice tag. I don't know much on the 4.7, but if it's a roller lifter engine there's no need for the zinc additive. As for longevity, keep it tuned, lubed, cleaned and don't abuse it and it'll last longer ... simple as that. Budd |
#3
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2001 Grand Cherokee
On Apr 10, 9:56*pm, "Budd Cochran" > wrote:
> "Larry" > wrote in message > > ... > > > > > > > > > > > Need some advice about my 2001 Grand Cherokee limited with 83,000 > > miles on it. > > > I purchased it new, it was demo and took very good care of it changing > > oil ever 3000 miles. *Also kept up the maintenance according to the > > manual. > > > The place (not the dealer!) where I get the fluids changed recommended > > that I consider changing to synthetic oil . *I was told there is a > > special oil for engines over 75,000 miles. > > > Anyone have any advice/experience about using or changing to synthetic > > oil? > > > I am also wondering about how long the 4.7l engine is generally good > > for. *In the past in this group I have heard that GCs tend to start > > needing expensive work soon after 100,000 miles. > > > Any experiences with long engine life? > > > Thanks in advance. > > > Larry > > Most of the "special" oils for high mileage engines are aimed at non-roller > lifter engines (solid lifter or old style hydraulic lifters) and contain > zinc additives to lube the cam and lifter contact points ... actually, > they're just old timey oils with a higher pice tag. > > I don't know much on the 4.7, but if it's a roller lifter engine there's no > need for the zinc additive. > > As for longevity, keep it tuned, lubed, cleaned and don't abuse it and it'll > last longer ... simple as that. > > Budd Thanks for that advice... I googled Jeep GC reliability and came across what appears to be two persistent problems....front rotors and something about blend door failure that plague the limited. The front rotor problem I experienced just after the warranty expired. Not sure but I might be dealing with that issue again. But the blend door issue, having to do with the heating system vents, was new to me. Other than those two things, I really could not find any other major problems. Several individuals mentioned getting high mileage, in the 150,000+ range without major problems. So your advice about keeping up with maintenance is on target. Larry |
#4
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2001 Grand Cherokee
"Larry" > wrote in message ... On Apr 10, 9:56 pm, "Budd Cochran" > wrote: > "Larry" > wrote in message > > ... > > > > > > > > > > > Need some advice about my 2001 Grand Cherokee limited with 83,000 > > miles on it. > > > I purchased it new, it was demo and took very good care of it changing > > oil ever 3000 miles. Also kept up the maintenance according to the > > manual. > > > The place (not the dealer!) where I get the fluids changed recommended > > that I consider changing to synthetic oil . I was told there is a > > special oil for engines over 75,000 miles. > > > Anyone have any advice/experience about using or changing to synthetic > > oil? > > > I am also wondering about how long the 4.7l engine is generally good > > for. In the past in this group I have heard that GCs tend to start > > needing expensive work soon after 100,000 miles. > > > Any experiences with long engine life? > > > Thanks in advance. > > > Larry > > Most of the "special" oils for high mileage engines are aimed at > non-roller > lifter engines (solid lifter or old style hydraulic lifters) and contain > zinc additives to lube the cam and lifter contact points ... actually, > they're just old timey oils with a higher pice tag. > > I don't know much on the 4.7, but if it's a roller lifter engine there's > no > need for the zinc additive. > > As for longevity, keep it tuned, lubed, cleaned and don't abuse it and > it'll > last longer ... simple as that. > > Budd Thanks for that advice... I googled Jeep GC reliability and came across what appears to be two persistent problems....front rotors and something about blend door failure that plague the limited. The front rotor problem I experienced just after the warranty expired. Not sure but I might be dealing with that issue again. But the blend door issue, having to do with the heating system vents, was new to me. Other than those two things, I really could not find any other major problems. Several individuals mentioned getting high mileage, in the 150,000+ range without major problems. So your advice about keeping up with maintenance is on target. Larry I have a bit of experience with high mileage engines as I was a forklift mechanic for 10 years (oldest truck with original engine was 45 years old at the time and was operated at least 80 hrs /week) and I've had five vehicles go over 200,000 miles: a '65 Plymouth 225 Slant Six (400K) a '79 Dodge 318 (325K) and two XJ's (88-89) with over 330K each when I got them. plus I work on small engines. I do my own work, naturally, so I speak from hands on experience. Glad to help. Budd |
#5
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2001 Grand Cherokee
On Apr 13, 10:37*pm, "Budd Cochran" > wrote:
> "Larry" > wrote in message > > ... > On Apr 10, 9:56 pm, "Budd Cochran" > wrote: > > > > > > > > > > > "Larry" > wrote in message > > ... > > > > Need some advice about my 2001 Grand Cherokee limited with 83,000 > > > miles on it. > > > > I purchased it new, it was demo and took very good care of it changing > > > oil ever 3000 miles. Also kept up the maintenance according to the > > > manual. > > > > The place (not the dealer!) where I get the fluids changed recommended > > > that I consider changing to synthetic oil . I was told there is a > > > special oil for engines over 75,000 miles. > > > > Anyone have any advice/experience about using or changing to synthetic > > > oil? > > > > I am also wondering about how long the 4.7l engine is generally good > > > for. In the past in this group I have heard that GCs tend to start > > > needing expensive work soon after 100,000 miles. > > > > Any experiences with long engine life? > > > > Thanks in advance. > > > > Larry > > > Most of the "special" oils for high mileage engines are aimed at > > non-roller > > lifter engines (solid lifter or old style hydraulic lifters) and contain > > zinc additives to lube the cam and lifter contact points ... actually, > > they're just old timey oils with a higher pice tag. > > > I don't know much on the 4.7, but if it's a roller lifter engine there's > > no > > need for the zinc additive. > > > As for longevity, keep it tuned, lubed, cleaned and don't abuse it and > > it'll > > last longer ... simple as that. > > > Budd > > Thanks for that advice... > > I googled Jeep GC reliability and came across what appears to be two > persistent problems....front rotors and something about blend door > failure that plague the limited. * The front rotor problem I > experienced just after the warranty expired. *Not sure but I might be > dealing with that issue again. > > But the blend door issue, having to do with the heating system vents, > was new to me. > > Other than those two things, I really could not find any other major > problems. *Several individuals mentioned getting high mileage, in the > 150,000+ range without major problems. > > So your advice about keeping up with maintenance is on target. > > *Larry > > I have a bit of experience with high mileage engines as I was a forklift > mechanic for 10 years (oldest truck with original engine was 45 years old at > the time and was operated at least 80 hrs /week) and I've had five vehicles > go over 200,000 miles: a '65 Plymouth 225 Slant Six (400K) a '79 Dodge 318 > (325K) and two XJ's (88-89) with over 330K each when I got them. plus I work > on small engines. > > I do my own work, naturally, so I speak from hands on experience. > > Glad to help. > > Budd I remember that slant six, that engine was both reliable and economical. Are they still building them? |
#6
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2001 Grand Cherokee
"Larry" wrote in message
... On Apr 13, 10:37 pm, "Budd Cochran" > wrote: > "Larry" > wrote in message > > ... > On Apr 10, 9:56 pm, "Budd Cochran" > wrote: > > > > > > > > > > > "Larry" > wrote in message > > ... > > > > Need some advice about my 2001 Grand Cherokee limited with 83,000 > > > miles on it. > > > > I purchased it new, it was demo and took very good care of it changing > > > oil ever 3000 miles. Also kept up the maintenance according to the > > > manual. > > > > The place (not the dealer!) where I get the fluids changed recommended > > > that I consider changing to synthetic oil . I was told there is a > > > special oil for engines over 75,000 miles. > > > > Anyone have any advice/experience about using or changing to synthetic > > > oil? > > > > I am also wondering about how long the 4.7l engine is generally good > > > for. In the past in this group I have heard that GCs tend to start > > > needing expensive work soon after 100,000 miles. > > > > Any experiences with long engine life? > > > > Thanks in advance. > > > > Larry > > > Most of the "special" oils for high mileage engines are aimed at > > non-roller > > lifter engines (solid lifter or old style hydraulic lifters) and contain > > zinc additives to lube the cam and lifter contact points ... actually, > > they're just old timey oils with a higher pice tag. > > > I don't know much on the 4.7, but if it's a roller lifter engine there's > > no > > need for the zinc additive. > > > As for longevity, keep it tuned, lubed, cleaned and don't abuse it and > > it'll > > last longer ... simple as that. > > > Budd > > Thanks for that advice... > > I googled Jeep GC reliability and came across what appears to be two > persistent problems....front rotors and something about blend door > failure that plague the limited. The front rotor problem I > experienced just after the warranty expired. Not sure but I might be > dealing with that issue again. > > But the blend door issue, having to do with the heating system vents, > was new to me. > > Other than those two things, I really could not find any other major > problems. Several individuals mentioned getting high mileage, in the > 150,000+ range without major problems. > > So your advice about keeping up with maintenance is on target. > > Larry > > I have a bit of experience with high mileage engines as I was a forklift > mechanic for 10 years (oldest truck with original engine was 45 years old > at > the time and was operated at least 80 hrs /week) and I've had five > vehicles > go over 200,000 miles: a '65 Plymouth 225 Slant Six (400K) a '79 Dodge 318 > (325K) and two XJ's (88-89) with over 330K each when I got them. plus I > work > on small engines. > > I do my own work, naturally, so I speak from hands on experience. > > Glad to help. > > Budd I remember that slant six, that engine was both reliable and economical. Are they still building them? ^^^^^^^^^^^^ Ha! What do you think? They were reliable and economical. Damn near bullet-proof, too. -- Old Crow BS#133, SENS, TOMKAT '82 FLTC 92", '87 FLTC |
#7
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2001 Grand Cherokee
On 4/13/2012 22:37, Budd Cochran wrote:
> > wrote in message > ... > On Apr 10, 9:56 pm, "Budd > wrote: >> > wrote in message >> >> ... >> >> >> >> >> >> >> >> >> >>> Need some advice about my 2001 Grand Cherokee limited with 83,000 >>> miles on it. >> >>> I purchased it new, it was demo and took very good care of it changing >>> oil ever 3000 miles. Also kept up the maintenance according to the >>> manual. >> >>> The place (not the dealer!) where I get the fluids changed recommended >>> that I consider changing to synthetic oil . I was told there is a >>> special oil for engines over 75,000 miles. >> >>> Anyone have any advice/experience about using or changing to synthetic >>> oil? >> >>> I am also wondering about how long the 4.7l engine is generally good >>> for. In the past in this group I have heard that GCs tend to start >>> needing expensive work soon after 100,000 miles. >> >>> Any experiences with long engine life? >> >>> Thanks in advance. >> >>> Larry >> >> Most of the "special" oils for high mileage engines are aimed at >> non-roller >> lifter engines (solid lifter or old style hydraulic lifters) and contain >> zinc additives to lube the cam and lifter contact points ... actually, >> they're just old timey oils with a higher pice tag. >> >> I don't know much on the 4.7, but if it's a roller lifter engine there's >> no >> need for the zinc additive. >> >> As for longevity, keep it tuned, lubed, cleaned and don't abuse it and >> it'll >> last longer ... simple as that. >> >> Budd > > Thanks for that advice... > > I googled Jeep GC reliability and came across what appears to be two > persistent problems....front rotors and something about blend door > failure that plague the limited. The front rotor problem I > experienced just after the warranty expired. Not sure but I might be > dealing with that issue again. Front rotors on some models sensitive to ham fisted poor torqueing of wheel nuts. Can be avoided by using a torque wrench. > > But the blend door issue, having to do with the heating system vents, > was new to me. The auto temp control system can be a real pain, and if it ever truly goes bad and you cannot fix it yourself, quite expensive. Best investment is the Factory Service Manual, which you can buy online at jeep under the for owners link. There are special high mileage oils, but 75-80 isn't that high. Pure synth, or synth blend is pretty much a personal taste unless the owners manual calls out synth due to engine design. |
#8
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2001 Grand Cherokee
On Apr 15, 2:35*pm, Lon > wrote:
> On 4/13/2012 22:37, Budd Cochran wrote: > > > > > > > > > > > > *wrote in message > ... > > On Apr 10, 9:56 pm, "Budd > *wrote: > >> > *wrote in message > > .... > > >>> Need some advice about my 2001 Grand Cherokee limited with 83,000 > >>> miles on it. > > >>> I purchased it new, it was demo and took very good care of it changing > >>> oil ever 3000 miles. Also kept up the maintenance according to the > >>> manual. > > >>> The place (not the dealer!) where I get the fluids changed recommended > >>> that I consider changing to synthetic oil . I was told there is a > >>> special oil for engines over 75,000 miles. > > >>> Anyone have any advice/experience about using or changing to synthetic > >>> oil? > > >>> I am also wondering about how long the 4.7l engine is generally good > >>> for. In the past in this group I have heard that GCs tend to start > >>> needing expensive work soon after 100,000 miles. > > >>> Any experiences with long engine life? > > >>> Thanks in advance. > > >>> Larry > > >> Most of the "special" oils for high mileage engines are aimed at > >> non-roller > >> lifter engines (solid lifter or old style hydraulic lifters) and contain > >> zinc additives to lube the cam and lifter contact points ... actually, > >> they're just old timey oils with a higher pice tag. > > >> I don't know much on the 4.7, but if it's a roller lifter engine there's > >> no > >> need for the zinc additive. > > >> As for longevity, keep it tuned, lubed, cleaned and don't abuse it and > >> it'll > >> last longer ... simple as that. > > >> Budd > > > Thanks for that advice... > > > I googled Jeep GC reliability and came across what appears to be two > > persistent problems....front rotors and something about blend door > > failure that plague the limited. * The front rotor problem I > > experienced just after the warranty expired. *Not sure but I might be > > dealing with that issue again. > > Front rotors on some models sensitive to ham fisted poor torqueing of > wheel nuts. * Can be avoided by using a torque wrench. > > > > > But the blend door issue, having to do with the heating system vents, > > was new to me. > > The auto temp control system can be a real pain, and if it ever truly > goes bad and you cannot fix it yourself, quite expensive. > > Best investment is the Factory Service Manual, which you can buy online > at jeep under the for owners link. > > There are special high mileage oils, but 75-80 isn't that high. > > Pure synth, or synth blend is pretty much a personal taste unless the > owners manual calls out synth due to engine design. I appreciate that reference to the Factory Service Manual. I think I will be keeping the GC rather than trade and the manual sounds like a good investment! If the blend door problem shows up, I will just deal with it. Still thinking about the move to synthetic oil. Thanks for the advice! Larry |
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