Need advice on oil
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Originally Posted By: JeepWJ19
What's the point of using an High Mileage oil if I don't have a leak or burning any oil?
The High Mileage formulation of Pennzoil has a much higher TBN than Pennzoil conventional. 4.0's love the higher TBN oils.
Check out:
http://www.pqiamerica.com/
What's the point of using an High Mileage oil if I don't have a leak or burning any oil?
The High Mileage formulation of Pennzoil has a much higher TBN than Pennzoil conventional. 4.0's love the higher TBN oils.
Check out:
http://www.pqiamerica.com/
Originally Posted By: JeepWJ19
Hi all
I really need some advice on my 4.0 of what oil to use. Some background knowledge - got it 4 years ago with 80k miles. It currently has 125k miles on it now. It has just started ticking really bad on cold start, and then on operating temperature it quiets. My mechanic already looked for exhaust leaks / broken bolts and couldn't find any. He used seafoam to check for the leak so he told me to run it for a week and then report back to him. I go to pick it up today and find out the full detail.
I believe it is my lifters are collapsed and will need to get new lifters and new camshaft. The reason is the cold start tick. I start the Jeep, it is fine the first few seconds and then it starts ticking, the engine shakes, and the exhaust burbles. Someone told me that is 99% collapsed lifter and not pushing up oil through the valves? But I want a better oil. I've been using Pennzoil High Mileage since 80k (do not know what original owners used). No signs of leaking (I check my oil every week). I believe I do not need High Mileage oil as the head and block are spotless and I see no signs of a rear main seal leak (although that could be because of the High Mileage?). I've spent the past two weeks everyday trying to decide which is the best oil for my 4.0. From what I've been reading I need an oil with a lot of ZDDP because the flat tappet engines love those? I've been thinking of switching to Rotella t6 10w30 or 5w30 (i cannot remember what my service manual says to use), but my friend tells me to get Mobil 1 Syn. They both seem pretty equivalent but I would like your opinion since you guys are the experts.
Thanks all!
Hey JeepWJ19 — We agree, you may indeed have a lifter issue. We strongly recommend that you follow through on your plan to get your engine checked (again), and then complete whatever repairs might be necessary. We would also agree that a flat tappet engine likes a bit more zinc than what is found in current API SN/ILSAC GF 5 engine oils. With that said, Rotella T6 10w30 would fit the bill for your application with it’s boosted anti-wear pack. Hope this info helps! - The Shell Rotella Team
Hi all
I really need some advice on my 4.0 of what oil to use. Some background knowledge - got it 4 years ago with 80k miles. It currently has 125k miles on it now. It has just started ticking really bad on cold start, and then on operating temperature it quiets. My mechanic already looked for exhaust leaks / broken bolts and couldn't find any. He used seafoam to check for the leak so he told me to run it for a week and then report back to him. I go to pick it up today and find out the full detail.
I believe it is my lifters are collapsed and will need to get new lifters and new camshaft. The reason is the cold start tick. I start the Jeep, it is fine the first few seconds and then it starts ticking, the engine shakes, and the exhaust burbles. Someone told me that is 99% collapsed lifter and not pushing up oil through the valves? But I want a better oil. I've been using Pennzoil High Mileage since 80k (do not know what original owners used). No signs of leaking (I check my oil every week). I believe I do not need High Mileage oil as the head and block are spotless and I see no signs of a rear main seal leak (although that could be because of the High Mileage?). I've spent the past two weeks everyday trying to decide which is the best oil for my 4.0. From what I've been reading I need an oil with a lot of ZDDP because the flat tappet engines love those? I've been thinking of switching to Rotella t6 10w30 or 5w30 (i cannot remember what my service manual says to use), but my friend tells me to get Mobil 1 Syn. They both seem pretty equivalent but I would like your opinion since you guys are the experts.
Thanks all!
Hey JeepWJ19 — We agree, you may indeed have a lifter issue. We strongly recommend that you follow through on your plan to get your engine checked (again), and then complete whatever repairs might be necessary. We would also agree that a flat tappet engine likes a bit more zinc than what is found in current API SN/ILSAC GF 5 engine oils. With that said, Rotella T6 10w30 would fit the bill for your application with it’s boosted anti-wear pack. Hope this info helps! - The Shell Rotella Team
The OP has been changing the oil on that 4.0L Jeep every 3500 miles with Pennzoil High Mileage oil.
A different oil is not going to fix a mechanical problem. What does your mechanic want to fix it? If it is way too much just keep driving it until the engine gives out.
A different oil is not going to fix a mechanical problem. What does your mechanic want to fix it? If it is way too much just keep driving it until the engine gives out.
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Sorry have been away for awhile. It is finally in the shop. Why would I run it until it dies and then be forced to get another vehicle that I have no knowledge about? That doesn't make the least bit of sense to me. It only has 126k miles on the clock, no rust, and she drives great. It's not like it was on it's last leg, it's just that the lifters were so loud that I could not stand it anymore.
For what it's worth my mechanic called, he estimated me $1400 total. tear down, new lifters, cam kit, head gasket kit etc etc.
For what it's worth my mechanic called, he estimated me $1400 total. tear down, new lifters, cam kit, head gasket kit etc etc.
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