Does it work if car is only used occasionally? Is it a good to do just in case the OMP is not working? I have a '88 13B NA convertible, used to premix in my '79 but found it gave me a rough idle sometimes when cold. Follow the 100:1 ratio, but I only use the car 1 or 2 weekends a month so I'm wondering if it settles. What brand do you use?

 

if you still have the metering pump, you dont need to do 100:1.

any brand that is tcw3 is good



mike

 

Go with a 400:1 ratio. Put it in BEFORE you put the gas in. THat lets it mix in a little better. I like the Valvoline 2 stroke, but like Mike said, any TCW3 certified will do.

 

What is a 400:1 ratio mean for a regular 12-14 gallon fillup?

 

I just put in an 8 oz. bottle for each ~15 gallon fill up which is more than enough.

 

I've used premix for awhile now. 4oz per fill-up.

 

i just noticed that the 787b uses a metering pump. they had almost undetecable wear after 24 hours of racing



mike

 

i never used it.

 

Premix does lower your octane. So if you have your metering pump hooked up, not sure why you would need premix.

 

lower octane on an NA might not be so bad



and didnt the 787b use different apex seals and treated housings?