Tried them all Love this super tacky Foam filter oil by BelRay. Never have an issue with dirt blow by. Motosport always has in stock ready to ship.
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This oil is too thick and too sticky to easily work into the foam. Picked some up when I ran out of my usual brand, and threw away about half a bottle. Bel Ray makes great 2-stroke and motor oil, but their filter oil does not make the cut.
this stuff works very well, very tacky, put just enough to turn the filter blue, pat the access out, and your done, i have never had dirt in any of my engines useing this filter oil.
Nothing but great things to say about this oil. It's super tacky and does an excellent job keeping dirt out of the motor. I use this on all my bikes with the Bel Ray cleaner as well.
Have used the Bel Ray Filter oil for the last 45 years & I have never seen an dust or dirt in the air boot, this is a very high quality, reasonably priced product that is unsurpassed in protecting your motor, it also doesnt wash off like the bio degrable air filter oils do if they encounter some water, I wont use anything else
Works great doesn't gum up or go to the bottom of the filter.
Better price than most... Bonus
Good stuff, really grabs the dirt and sand.
Put a little of this on after the spray fab1. Extra sticky for dirt!