First Change - Ready!!

[fdcg27]

Arco,
Do you really think it matters in something like a Colorado?
Dexos 1 is intended to cover GM's entire range of gas engines, some of which are fairly demanding of their oil.
I don't think an oil not labeled as being Dexos 1 compliant would be a problem in a normally aspirated engine offering only moderate output.
OTOH, we've had E10 fuel here for years, and I've never had any problems in running it, and current oils don't seem to be hurting any of my engines either.
You would not believe how smoothly our highest mileage car runs on nothing more than PP. This '97 Accord hit 200K last week, incidentally, and was at 3K into what will probably be a 6K run of PP 5w30.

 

[dave1251]

Originally Posted By: ARCOgraphite
Originally Posted By: dave1251
Either you have to worst luck in the world or you can not drive properly because you have destroyed more late model engines than entire racing families.
I guess I have to post a photo of the swamp water they sell for gasoline up here. Bad gas = dead engine in a hurry. If not the gas, then logically one would blame either the wonderful ILSAC FE oils engines that are rigorously dyno flogged are all junk. NEVER had an issue before the gas went to E10 and the oils went to mid saps. Never.


I hope you have better luck in the future.

 

[steve20]

seems like a nice truck--best of luck with it

from page 9-26 under 'Break In' the following statement appears

Do not drive at any one
constant speed, fast or
slow, for the first 805 km
(500 miles). Do not make
full-throttle starts. Avoid
downshifting to brake or
slow the vehicle.

Any ideas why downshifting is not recommended during break in---? I would think the large increase in vacuum would help speed ring break in

 

[Xstang]

Considering it's not one of the newer DI engines, I say PYB should be fine IMHO In your 3.7L. If you were talking about a Cadillac CTS with the 300hp DI V6, for example, which is what DEXOS is intended for, it'd be a different story.

If you're worried about the warranty, the best advice I could give is to hold onto the receipt you bought the oil/filter with, and note the date/mileage it was done. While I think a full syn would be nice, I hardly think that good old Pennzoil will ruin that engine.

Luckydevil-that is truly some rotten luck right there.

ARCO-not only the gas, but the internet is terrible up there as well. Oh yeah, and the football teams

 

[A_Harman]

I don't think you need to do the extra oil change, but I would use a dexos-approved oil for it anyway. You've spent what, $30,000 on your new truck, and want to save $5 in buying oil for on an unnecessary change? Option up to a syn blend that meets dexos.

 

[91344George]

@ARCOGraphite:

Why don't you do something about the poor quality gas you have?....call the oil companies and complain. I doubt corporate wants potentially damaging gasoline being sold in their stores.

 

[ARCOgraphite]

I have to get another ethanol test kit and use lab proceedure and container for sampling. Its a pain. But you are correct. If I was retired Id have more time.

 

[Sunnyinhollister]

Originally Posted By: ARCOgraphite
Originally Posted By: dave1251
Either you have to worst luck in the world or you can not drive properly because you have destroyed more late model engines than entire racing families.
I guess I have to post a photo of the swamp water they sell for gasoline up here. Bad gas = dead engine in a hurry. If not the gas, then logically one would blame either the wonderful ILSAC FE oils engines that are rigorously dyno flogged are all junk. NEVER had an issue before the gas went to E10 and the oils went to mid saps. Never.


That's interesting - I've NEVER had an issue after the gas went to E10 and the oils went to mid saps. Never.