Originally Posted By: Gabe
Originally Posted By: Rolla07
I never understood the talk about basestocks and what real world benefit they give in terms of oil. Can the car really tell the difference somehow? Can someone explain or better yet, prove its better? If better, in which way?
Synthetic bases are better. If you want proof, then take a look at PQIA website and compare the cold flow measurements. Or, if you want a more overall impression, look at the ACEA approvals for a conventional oil compared to a synthetic oil.
I think the previous poster meant real world differences between group IV/V vs. group III/III+. Considering that group III/III+ oils can be formulated to meet some of the most stringent specs such as ACEA, VW, MB, BMW, I would say the exercise of trying to come up with a list of group IV oils is mainly academic.
Originally Posted By: Rolla07
I never understood the talk about basestocks and what real world benefit they give in terms of oil. Can the car really tell the difference somehow? Can someone explain or better yet, prove its better? If better, in which way?
Synthetic bases are better. If you want proof, then take a look at PQIA website and compare the cold flow measurements. Or, if you want a more overall impression, look at the ACEA approvals for a conventional oil compared to a synthetic oil.
I think the previous poster meant real world differences between group IV/V vs. group III/III+. Considering that group III/III+ oils can be formulated to meet some of the most stringent specs such as ACEA, VW, MB, BMW, I would say the exercise of trying to come up with a list of group IV oils is mainly academic.