mattrudella
09-30-2004, 07:53 PM
Went to the dealer today and got oil and filter. The oil that they gave me was in quarts, 15w40 CL-4, CH-4, CG-4, CF/SL APPROVED, GM Part# 12345634. On the back of the quart it said something to the effect "Recommended for all GM/Chevrolet diesels". Now to my questions: Who makes this oil? Is this the right/good oil for LLY? Is this the same oil that comes prefilled from the factory?
MattEdited by: mattrudella
MattEdited by: mattrudella