Can I run heavy oil this winter. (1 Viewer)

Joined
Apr 6, 2005
Messages
1,006
Location
Fairview, NC 28730
 
 
 
When I got the truck it had 10w30, I was using 15w30, I just put in 20w50 and it runs cooler and smoother. Has anyone run 20w50 in the winter. I assume cold start would be more difficult. Is there anything wrong with doing this?
 
Joined
Aug 19, 2003
Messages
2,534
 
 
 
I use Mobil 1 year around. Mobil 1 has about the same viscosity cold as when hot, and the hard (cold) starts went away with the battery upgrade.

Just my experience.

M
 
Joined
Oct 22, 2002
Messages
4,413
Location
Durango, Colorado
 
 
 
 
You can leave it in if you want but I would not. I don't think it gets super cold in NC but your starting will be harder. Also your oil pump has to work much harder to push 20/50 through the system. That goes for all year. I forgot to take it out of my Camaro once as a kid in Wisconsin. Could almost count each cyclinder fire one cold Dec. morning. Now I run 10/40 summer 5/30 winter. Almost all new cars recommend 5/30 year round.
 

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