Recent content by Speed3

Thanks for the replies everyone. I think I will stick with the GC for now. I will look into getting a used oil analysis done. When is the best time in the OCI? DO you do one halfway, or just one when you change it to see if it was doing ok and would have lasted longer?

Hello all, I've been lurking around this forum for sometime now but this is my first post. This may have been asked before but there are so many threads here I couldn't find one. I drive a 2008 Mazdaspeed 3, 2.3 liter Direct Injection Turbo. I am now using German Castrol 0W30. Fuel dilution...