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Quote from rebelx : How much of the blend is actually synthetic?

Synthetic Blends typically have a minimum of 20% synthetic oil. The actual percentage will vary between brand formulations.

if you don't live in places with snow, don't even think about loosing sleep over 'synthetic vs mineral'

http://www.bobistheoilguy.com/motor-oil-103/

if you have snow and park-and-go several times a day, yeah, synthetic, of the best kind for you.


Another tip for oil selection is: Buy the brand of the gas station you preffer.

I only fill up at Bp brands (responsible for spill yada yada i know. all oil cias do bad things, i think they should be fined, but so far, they have the best prices by far around here)

so i only use castrol gtx on my cars. So i'm sure the aditives in my gas and the aditives in my oil are extensively tested and developed togheter, so i'm getting the best of the chemists works at that company.