|
I won't use anything but syn in my engine, but that's what it originally shipped with. This may be due to the fact I'm in Alberta and it helps with those cold engine starts when it's so cold, penguins call you crazy for going out. I remember being surprised when I brought in my vehicle and saw them putting in synthetic.
I think that also makes the most sense for those vehicles equipped with the GM Oil Life System, since if that system tells you your oil is still good after 8000k since the last oil change, it must be calibrated to the average breakdown of synthetic oil. I haven't seen a conventional oil that lasts nearly as long under good driving.
|