Indeed true about the clearances. I compared the rod and main clearances in my wife's 2005 Duratec 2.0 , my old '85 Mercedes diesel 3.0, and a 1959 vintage aircraft engine of 540cid. I verified that this unlikely group of engines all share overlapping rod and main clearances. In the order...
Thanks for great UOA's! What a great oil.
Heavier oil in a Focus? Sure. I looked in a 2006 Focus owner's manual published for UK model owners. The recommended oil grade was 5W-30 for the very same Duratec 2.0 that NA owners are told to use 5W-20 in.
Also the factory OCI over there for that...
Originally Posted by VQLT
can I extend the OCI for an older car if I use today's modern oils? I have a 2005 Scion XA that recommends 6 months
or 5k miles but that is based on oil technology from 15 years ago (which I believe was SM rated oil). with new oils can I extend the OCI?
I went to...