Impala oil consumption/leaking with synthetic?

oilmaven · Jul 30, 2011

I started using synthetic (PP and Ultra later) in my 2008 Impala at around 24,000 miles. After a couple of OCI's I noticed the car was using about 1/2 qt. of over a 5,000 OCI (I know, not a big deal). I also noticed some "weeping" at the rear oil seal (not enough to drip). The last 2 OCI's I did a "Kreen" clean with Pennzoil Conventional and decided to do a follow-up interval with Pennzoil Conventional...ended up running it almost 4,000 miles before changing it out today. The oil didn't budge off full and there didn't seem to be ANY sign of leaking. I filled it with Ultra again but am wondering if I should go back to the Pennzoil Conventional at the next change, run it 4,000 miles and call it a day.

wkcars · Jul 30, 2011

Is the car still under warranty, if so you could get the "weeping" looked at at the dealer.

Drew99GT · Jul 30, 2011

You sure it's the rear seal? These engines have bad rear head gaskets that leak oil and coolant. Just had them done under warranty in my mom's 2007 Impala.

oilmaven · Jul 30, 2011

Head gaskets were replaced under warranty at about 65,000 miles. The warranty is good to 100,000 miles. I'll run this OCI and see how it looks...if the seal is "weeping" I'll have it checked out by the dealer.

virginoil · Aug 2, 2011

Originally Posted By: oilmaven
I started using synthetic (PP and Ultra later) in my 2008 Impala at around 24,000 miles. After a couple of OCI's I noticed the car was using about 1/2 qt. of over a 5,000 OCI (I know, not a big deal). I also noticed some "weeping" at the rear oil seal (not enough to drip). The last 2 OCI's I did a "Kreen" clean with Pennzoil Conventional and decided to do a follow-up interval with Pennzoil Conventional...ended up running it almost 4,000 miles before changing it out today. The oil didn't budge off full and there didn't seem to be ANY sign of leaking. I filled it with Ultra again but am wondering if I should go back to the Pennzoil Conventional at the next change, run it 4,000 miles and call it a day.

Use the oil that stopped your weeping and controlled the oil use. Don't go back to the oil that initiated the weeping despite the experience or claims from other. Don't be stupid.

walk23 · Aug 3, 2011

If the level remains at the full mark on PU your leak is resolved. Use whichever, however if the leak resumes go back to the Pennzoil conventional. Extended OCI are one reason for the ultra.

addyguy · Aug 3, 2011

Have a used oil analysis done to check for coolant in the oil.

Ram01 · Aug 3, 2011

Try Mobil 1 that will stop the oil burning and extend your oci

Ram01 · Aug 3, 2011

leave PU alone

RegDunlop · Aug 3, 2011

Use valvolibe durablend, it won't sludge like the pennzoil products.

lexus114 · Aug 3, 2011

Originally Posted By: RegDunlop
Use valvolibe durablend, it won't sludge like the pennzoil products.

omg.

VRAY · Aug 3, 2011

Will this never stop ???

lexus114 · Aug 3, 2011

Originally Posted By: VRAY
Will this never stop ???

Does not seem that way.

Drew99GT · Aug 3, 2011

Originally Posted By: RegDunlop
Use valvolibe durablend, it won't sludge like the pennzoil products.

Was that supposed to be a joke?

lexus114 · Aug 4, 2011

Originally Posted By: Drew99GT
Originally Posted By: RegDunlop
Use valvolibe durablend, it won't sludge like the pennzoil products.

Was that supposed to be a joke?

I hope it was.

Impala oil consumption/leaking with synthetic?

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