Originally Posted By: KD0AXS
Originally Posted By: donnyj08
Pbm, I believe dexos 2 is gm's 5w20 spec. Dexos 1 is the spec for 5w30.
dexos1 is for gas engines.
dexos2 is for diesel engines.
Some new GM engines do call for a dexos1 5w20.
That makes sense, I stand corrected.