I need to find an answer to a question that I have had no luck on in the tech forum. I plan on running 10-40 for oil and as far as fuel the highest octane I can get is 91 that is non leaded high test I am planning on using octane booster and was thinking of adding lead substitute to help with my original 455 valve seats. I get a little bit of clattering noise on acceleration from the valves and someone on this site had mentioned that adding ATF fluid to a tank of fuel will help quiet the valve noise. Because of pollution concerns , lead substitutes have become hard to find around here so the question is will ATF fluid in the fuel replace a lead substitute?? And if so how much should you add to a tank of fuel for my 1969 Olds 98 convertible??

 

this was a problem i just had i added about half a qurt and it has help alot!

 

Use this stuff for your lead substitute. It's excellent and a bottle lasts a long time. It's one measurement cap full per 10 gal of gas.
http://shopping.msn.com/prices/cd-2-...-32-fl-oz-4298

 

Marvels Mystery Oil always worked well for me. I keep a gallon jug of it in the shop all the time. Its great for keeping the rubber parts your carb and fuel pump lubricated also. think its like $12 a gallon at Walmart, you only need 4 ounces per 20 gal of gas so it last along time. Its great for stikky valves too.I run it in the oil and gas.

 

We used to be able to get the cd-2 stuff here but as of a year ago i have not seen it , may have to look at ordering. Marvel mystery oil is one I have not heard of but we have a Walmart not far away , I will see if they carry it at the canadian walmart , regulations up here keep getting tougher to wade through. Thanks for the responses