Bror Jace -
Quote:
Originally Posted by Bror Jace
Guys, it's mostly Ford and Honda that spec 0/5W-20 oils ... and I don't think they redesigned a single engine with this thinner oil in mind. All the engines that call for it are older designs with the same clearances as when they called for 5W-30 (like Dad's Mercury Grand Marquis with its 4.6L V8).
I've seen dozens of UOAs (Lab tests) using 5W-20 and they usually look superb. I'd use 0/5W-20 without much reservation. Just don't go over 5,000 miles without doing a UOA from a place like this:
http://www.blackstone-labs.com/gas_engines.html |
I just did that test and my car came out squeaky clean. I am running a heavier 10W40 oil, though, because I am at 155K+ miles (Saturn S-Series like to burn oil). I may go back to 5W30 in my next oil change, and check the dipstick a little more often.
Just to oil the waters a bit more, here is another great website on engine oil :
Bob Is The Oil Guy (BITOG)
http://www.bobistheoilguy.com/
CarloSW2