How much Marvel ???

[r_reed]

having had sticky valves in my old eab and freeing them up with MMO in my gas (and down the carb)and no reoccurence, i'm a believer. it may not do anything, but it doesn't appear to do any harm except possibly burn up some $$.

 

[gary635g]

4oz/10 gallons for upper cylinder lube I use in all classics.

 

[Don]

I use a Apco upper cyl lube device,a glass bottle with a needle valve supplying both sides of manifold below carb,works great,Valves get a little noisy open valve a little more,be careful with. needle,valve,you can suck a bottle full out in just a few miles,.