Napa Valve Tune??

[sw99]

Anyone try this? Just for kicks, I added a bottle a couple of months ago and am curious to see what it does. I will soon cut up the filter to see what kind of deposits are left. I have approximately 3500k on the oil since I put it in. It's supposed to melt away the sludge and clean everything up inside the engine. I am just too cheap to get the auto-rx yet I really dont know what to expect since the engine looks new through the oil fill.

 

[Brett Miller]

I wouldn't expect much...its just mineral spirits.

 

[sw99]

Yea, I am not impressed. I don't think it did anything at all. I guess it would be hard to tell anyway, my trucks engine looks spotless under the valve covers.