is the 5w-20 oil that they want you to use in the '01 v10 a synthetic. and would running a different weight synthetic matter much. the 5w-20 seems a little light, espcially in the hot summers AZ has.

 

5w-20?

I'm using 5w-30! non-Syn since the goverment now allows crude oil base in syn oils!
http://ic.net/~wawii/Oil_Reports/
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Thanks,
Will

2000 F-250 SD Crew Cab, Short Bed, Lariat, 4X2, V-10, Auto, 3.73LS

 

is the gov. allowing crude oil as a base in syn. oil now?
are there any sites that i can make reference to?

 

I read the article in one of my Automotive or Engineering publications.

Check out the SAE site at: http://www.sae.org/
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Thanks,
Will

2000 F-250 SD Crew Cab, Short Bed, Lariat, 4X2, V-10, Auto, 3.73LS