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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Thundergun on November 26, 2013, 05:31:09 pm

Title: 350 Special Oil Needed?
Post by: Thundergun on November 26, 2013, 05:31:09 pm

Hey Guys. So the oil cap on my '87 350 (well, that's what the sticker on the door says) in my 85 k10 says 'Special Oil Required - See owners Manual'.

I have never heard of any 'special oil'. I got the truck for free. The previous owner didn't know much about it. There is a sticker inside the door that says this truck was made CA compliant in 2006, and states the engine is an '87 350.

I'm guessing that's just a generic oil cap? Any thoughts on this?

Title: Re: 350 Special Oil Needed?
Post by: DuckAholic1 on November 26, 2013, 09:22:01 pm

My truck is an 87 r10 w/350, the oil cap & manual says 10w30.
I've always ran 5w30 with no problems. Not sure what " special oil" means!!!

Title: Re: 350 Special Oil Needed?
Post by: Thundergun on November 26, 2013, 10:41:17 pm

Thanks for the info. Ya i'm not too worried about it, just wanted to make sure.

Title: Re: 350 Special Oil Needed?
Post by: darmentle on November 27, 2013, 08:18:38 am

They do that so you will bring it in to the dealership and pay more money for there so called special oil lol.