switching to synthetic

[phatman]

OK - so I got myself a 2010 Silverado with GM's Oil Life Monitor. I have always changed the oil at the dealership according to the OLM with conventional 5W-30 oil.

So this summer my wife got a 2015 Equinox that specifies Dexos oil. Well not the type to spend a whole lot of time dwelling on service intervals, I got to wondering about this new Dexos specification. Well it turns out that GM went to this due to Variable Valve Timing - the engine oil actually does the work in moving the cam to different positions.

Well, I got to thinking that my truck has VVT and from 2011 and up Siverados were spec'd for Dexos oil for this very reason.

Sadly my truck was left out.

So my question is this: do vehicles that have the Dexos specification have a different OLM algorithm than the algorithm for conventional oil trucks?

and if they do, can I re-flash my OLM so that it reflects the fact that I am using a upgraded oil?

[Black02Silverado]

No need to do anything. Keep using what you have been using. If dexos 1 is required then run it. It can also be ran in older vehicles with no issues.