68 C20 gas question
 

How do I find out what type of gas my engine uses? I inherited a 68 C20 and I am not sure what gas it uses (Leaded or unleaded)... How do I find out?

If it DOES need leaded gas will running it with unleaded gas hurt the engine?

The engine is a 250 streight six 4.1L

Thanks for your help! Chris

Re: 68 C20 gas question
 

Re: 68 C20 gas question
 

Regular grade unleaded should run just fine.

Re: 68 C20 gas question
 

it should run fine on pump gas. im told you want hardened valve seats if you ever rebuild the engine. and no, i dont know what is involved with that...lol

Re: 68 C20 gas question
 

Tetraethyl lead, which was formerly added to gasoline as an antiknock agent, had the added advantage that it acted as a lubricant for valves, particularly for the exhaust valves. As burb71 stated, it's been gone for a very long time. If your engine were going to be damaged by a lack of lead in the gas, it would have happened by now.

Regular gas will be fine. The biggest problem you will have is not from the lack of lead, but from the addition of ethanol to gasoline. Ethanol is not friendly to fuel system components that weren't designed for it. When you get to the point where you need to replace fuel system components, particularly a carb rebuild, make sure the parts are compatible with e10, which is 10% ethanol and is the gasoline you'll find almost everywhere.

Re: 68 C20 gas question
 

just fill her up and drive....have fun with it.

Re: 68 C20 gas question
 

Thanks everyone! Looks like I was a little too worried about it.

:c2:

Chris