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  1. General Technical Chat
    I have read several forum posts on this subject but none of them address an engine's mileage. There are discussions about 5W20 over 5W30 and that either is ok or not ok, etc. My 2010 Focus SEL engine has 110,000 miles on it and I have always used non synthetic 5W20 which it came with. It is...
  2. DURATEC Performance (2003-2007)
    I have a 2007 ZX4 ST. Just want some opinions as to which oil performs the best. This is my daily driver, and I live in the Midwest, so temperatures are a factor. Car is completely stock.
  3. DURATEC Performance (2008-2011)
    I have a quick question. My 2.3 Duratec has 99,900 miles, I was thinking of running a little thicker oil than the recommended 5w-20. The guy at Autozone told me to try 10w-30, but I think that might be a little thick, especially seeing as it's cold out up here now during winter. Those auto...
  4. DURATEC Performance (2003-2007)
    Has anyone ever tried a heavier weighted oil in their PZEV Duratec? I feel like with 5W-20 I may as just save money and dump in some vegetable oil, it's SO thin! Obviously Ford recommends it for a reason, and I haven't had any probs for 95,000 miles with it, but I feel like the engine might...
1-4 of 7 Results