Oil Double Check

[Motox6]

Out of oil changes..starting my own now.

 

As far as everything I've read on this forum....0w20 Dexos is the thing.

 

Valvoline 0w20 is what I have..this work in my 2015 Silverado OK? Seems like it's what everyone has said is OK but my concern is it being full synthetic.

 

Difference between the blend and full?

 

Been trying to research on here..just finally got impatient. haha

[Seth1972]

Needs to be Dexos approved look for the logo on the bottle.

 

 

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[txab]

If it meets the Dexos standard, go for it. That goes for synthetic or blend

[newdude]

Yep. Semi or Full synthetic, no problems. Hang on to some receipts for the sake of warranty work (if the need ever arises) that way if they ask for service records, you have proof, as well as what type of oil and if it is/was Dexos licensed.

[Cowpie]

And a 5w20 will work also. And yes, there are 5w20's on the dexos1 approved list. Both 5w20 and 0w20 are 20w oils. Only difference is the cold flow rate, with the 0w20 meeting 6600 cSt at -35c and 5w20 meeting 6600 cSt at -30c. They both have the same viscosity at operating temperature. And oil weight is not thickness. It is the measure of resistance to flow. And a blend will work just fine, but a lot of full syn oils can be found on sale or with rebates that make them competitive in pricing. What the base oil is nowadays is not as critical, as base oils have come a long way in the last decade. The additive package that makes up to 20% of any motor oil you buy really has more to do with an oil being good, better, or best. There are many commercial fleet operations with 1500's that have engines with 0w20 spec and are filling them up with the same 5w30 or 10w30 they have in bulk in their maintenance shops. No more problems than anyone else is having and not being denied warranties right and left.

 

I guess one could hold onto receipts. I never have, but I do document when I do things. I have grown fond of using the maintenance record keeping offered on the Chevrolet website owner section. In well over 40 years of both personal and commercial vehicle and equipment operation, I have never had a dealer or OEM ask to see anything when it came to a warranty thing. They have not even asked what oil I was using. A couple of times, just wanted to know when I had changed it. Most times, no one asked anything.

 

And it takes more than a used oil sample test to determine if an oil is dexos1 rated or not, and no way to tell if it is a 0w20 or 5w20. The level of testing it would require to find all that out, it would be cheaper just to replace the engine by the OEM. And many oils will easily meet the dexos1 requirement even if they are not on the list. And GM had a TSB out about a year or two ago that stated that a 20w oil that met the ILSAC GF-5 standard could be used in place of a dexos1 approved oil.

 

Simple. Get a quality name oil that meets the modern specs for oil standards and rest easy. I have become convinced more and more over time that the GM pushing the dexos1 spec is more about making sure people don't use some sort of whale snot in their engines. Even the next generation dexos1 spec that will be coming out is tied very closely to the new ILSAC GF-6 spec that will be out soon. Angela Willis, chief of GM lube development has stated categorically that this is the case.

[Black02Silverado]

Like stated above, as long as it had dexos1™ on the bottle it will work just fine.