Factory fill oil?

WilliamBos · August 27, 2016

Dexos oils are minimum requirement, aka good enough lubricants. There's obviously better made lubricants on today's market that meet and exceed OEM.

The Dexos seal is good enough for me. Warranty is nice to have.

Cowpie · October 23, 2016

In over 40 years, in both personal and commercial trucks, I have yet to have a dealer or OEM even ask what oil I was using.... brand or viscosity. That is over 40 years of ownership, including over 5 million miles of commercial truck operation. Unless one opens their mouth and says something, doubtful anyone would check. Any of the name brands on the shelf, blends and full synthetics, will provide more than ample engine protection. Even a few "conventional" oils will meet dexos1 specs, though not dexos1 "approved", but that is only a select few.

Z45 · October 23, 2016

dexos is a way for GM to drive business into their dealerships and to make money of oil companies by licensing the dxos logo.

sdeeter19555 · October 23, 2016

In over 40 years, in both personal and commercial trucks, I have yet to have a dealer or OEM even ask what oil I was using.... brand or viscosity. That is over 40 years of ownership, including over 5 million miles of commercial truck operation. Unless one opens their mouth and says something, doubtful anyone would check. Any of the name brands on the shelf, blends and full synthetics, will provide more than ample engine protection. Even a few "conventional" oils will meet dexos1 specs, though not dexos1 "approved", but that is only a select few.

When the rod bearing failed on our new Subaru (a stop-sale vehicle that got sold anyway), the dealer was only concerned the oil had been changed; not that I was running 5w40 Rotella because of the turbo (which was probably why it took longer for the rod bearing to fail)...5w30 to 20w50 is allowed in my model year.

Dealers aren't that sophisticated, and it would be highly improbable for them to conduct a UOA and confirm positively what oil you were actually running.

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Z45 · October 23, 2016

Nor are UOA sophisticated to be able to tell what brand oil or what spec it was when new, all it can do it give current condition and weather it was still good oil.

WilliamBos · October 23, 2016

Nor are UOA sophisticated to be able to tell what brand oil or what spec it was when new, all it can do it give current condition and weather it was still good oil.

So they would base it on oil condition, like if it was ever changed, a.k.a 'over maintrnanced' meaning over service intervals.

sdeeter19555 · October 23, 2016

Basically, the Subaru dealer told me that they were only concern that the oil had been changed...in other words, they were only concerned that the engine wasn't full of sludge from not changing oil.

After this was all said and done, the guy proceeded to tell me of a newer Subaru that suffered a turbo failure...the owner hadn't changed the oil in 87,000 miles, only added oil as needed. So those people exist...

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Cowpie · December 12, 2016

This was an official GM poster. But up here GM also recommends T6 5W40 for Duramaxes during the winter.

Probably regional.

I use 5w40 in colder months and 15w40 in warmer months for my diesels. A couple of applications, 10w30 year round. Better cold flow at start up with a 5w40 in cold temps is always a good thing. Both 5w40 and 15w40 are the same viscosity at operating temps. One could use 5w40 year round if they had a mind to do so. Wouldn't hurt a thing.

BigBlueLB756 · December 17, 2016

Here's some interesting reading for a long, cold winter day. (Don't know if it's been previously posted or not).

https://540ratblog.wordpress.com/

revrnd · February 22, 2017

I am not brand loyal to oil, have tried a few brands. There are some that I won't try again even if free.

Filters I am more fussy on, either AC UPF48R or the Frame premium line, had excellent UOA on both.

Air is AC only.

A bit of a ramble, but bear w/ me.

My '17 is the 4th truck I've owned w/ the OLS. Since none of the owners manuals for these trucks have said whether to use conv' or syn' oil, I've run syn' due to the longer drain intervals. I have only used AC or WIX filters. Until GM/AC obsoleted the longer OEM filter that my '04 6.0L used, I always ran the recommended filter. After finding the longer WIX replacement, I used longer filters in the '04 & '11.

Considering I used a syn' oil (Pennzoil) I may have to check the Petroleum Institute's site that someone liked to a while back. I know several folks use (pardon my choice of words) oddball brands of oil (not readily available up here in the Great White North), I'm prone to stick w/ a "household" (and I don't mean store brand) producer of oil. Also, I never thought of using a premium/better oil filter to suit the longer drain intervals.

The '17 specs a PF48 & I have 2 years of oil changes thru the dealer.

All that being said, can someone breakdown the benefits of the UPF48R filter? Would it be a good choice for someone like me that follows the OLS? I see for MY2017 GM says to use the smaller PF48E in the 6.0L, while the other motors call for the longer PF63E. Various back & forth responses to why on BITOG, so I'll likely stay w/ the short filter. I feel uncomfortable since a longer filter was spec'd in the past for the 6.0L motor and shorter filters were spec'd for the 5.3 in the past.

Finally, are the UPF48R filters available thru the various auto parts chains & what's a typical price?

TIA