Daily Driver oil

[Dave Turner]

Kevin, I ran my 2003 F250 6.0l to 425,000k on Royal Purple 15W40 and the current 2011 F250 6.2l has seen almost 70,000k running on RP 5w20 since I bought it at 125,000.

(....besides, we sell the stuff )

[Ed Wright]

Hard to beat Mobile1.

[Rat Raceway]

Mobile 1 here as well.

I have had two different motor builders say they like the way things look inside after Mobile 1 has been exclusively run.

[Tom Moock]

Kevin, you have 20,000 miles to pick a brand of oil, gm gives you 4 free oil changes when you buy a new truck. Tom

[Tim H]

Originally Posted by Dave Turner

Kevin, I ran my 2003 F250 6.0l to 425,000k on Royal Purple 15W40 and the current 2011 F250 6.2l has seen almost 70,000k running on RP 5w20 since I bought it at 125,000.



(....besides, we sell the stuff )

Dave, I used to sell the stuff when I worked for NAPA and I recall the back of the bottle stating in fine print that it should not be used in 2005 or maybe 2008 and newer vehicles. Has that changed ? My daily driver vehicles all use Valvoline.

[Myron Piatek]

I've seen the 2007 and newer recommendation on some Amsoil oils for diesel applications. I believe it was the extra zinc & phosphorous, that the older diesel oils had, that was removed for the newer diesels because it affected their newer style catalytic converters in a negative way. I don't know if any similar restrictions exist for newer gas engines.

[Dave Turner]

Originally Posted by Tim H

Dave, I used to sell the stuff when I worked for NAPA and I recall the back of the bottle stating in fine print that it should not be used in 2005 or maybe 2008 and newer vehicles. Has that changed ? My daily driver vehicles all use Valvoline.

Their new "SAE" line of oil addresses that issue Tim. They retained the Synerlec additive in the "HPS" offering for older applications....and charge slightly more for it.

[njk53]

Dexos is a GM oil requirement. It can be either full synthetic or semi-synthetic. See the article below it pretty much explains what the deal is: Looks like a money grab and a lot of baloney to me. Mobil 1 met the Dexos standard before the Dexos name came about..

http://www.agcoauto.com/content/news/p2_articleid/178

[Dean Feiock]

I normally do not jump into these types of conversations, but here goes. Take this for what its worth or not. I could just be getting too old to know better.

I have been working in a dealership for over 25 years. My current dealership is multi-line. We have GM, Nissan, and Chrysler.

First, I can tell you without question, Nissan and Chrysler both require verifiable documentation on oil changes for warranty. Hand written shop orders and some scattered receipts DO NOT count. I cannot comment on GM, but I can find out if needed. I have had two bad Chrysler engines and one bad Nissan engine in the last twelve months that were turned down due to lack of provable maintenance.

Second, I am a life long Chrysler tech and a newbie Nissan tech. We have never really had oil issues. But I watch the our GM techs pull engines out on a weekly basis to put in new pistons and rings. GM most certainly has oil issues, and it's always the ring pack stuck in the groove. Walk into any GM dealership and the odds are they are going to have an engine out putting pistons and rings in it. GM switched it's oil requirements right as their oil issues started to get severe. They realized a little to late that with the super light ring tension they are running, they needed better and lighter oil.

Third, I never seem to understand why using a manufacture specified oil seems so foreign to some. If it's good enough for the manufacturer, and required by the manufacturer during warranty repairs, how bad can it be? Some say price is an issue which I find hard to believe, after all if you can afford $60k for a truck the oil shouldn't be an issue should it?

[Greg Barsamian]

http://www.gmdexos.com/index.aspx