Thread: Rough Idle on my Chevy 350

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WOA! Thanks! I drove the car home (non highway trip for about 20 mins), then to the park and ride a few times (3 miles round trip). I'll take it out warm it up and take it on the highway.

I changed the oil last night with VR-1 racing oil 20W-50.

Thanks for the info. I really appreciate the help.

Originally Posted by Zombiebrew

WOA! Thanks! I drove the car home (non highway trip for about 20 mins), then to the park and ride a few times (3 miles round trip). I'll take it out warm it up and take it on the highway.

I changed the oil last night with VR-1 racing oil 20W-50.

Thanks for the info. I really appreciate the help.

FWIW 20-50 in not a good choice, stock 350 stick with the spec weight viscosity. If it has some whoop-ass and you lean on it often, Castrol 20w-40 will work great.

Might also add some Marvel Mystery oil the gas tank, good for valves and guides.

Originally Posted by pepi

FWIW 20-50 in not a good choice, stock 350 stick with the spec weight viscosity. If it has some whoop-ass and you lean on it often, Castrol 20w-40 will work great.

Might also add some Marvel Mystery oil the gas tank, good for valves and guides.

Another board suggests adding a quart of significantly thinner oil to balance out. Any suggestions?