Air filter oil

[VMX Andrew]

Try notoil

It's unreal

Been using the No-Toil stuff last 3 years before that it was the Truck wash in warm
soapy water a few times over and always leave the filter out for a day or two too dry out and use
Motul filter oil.
Never use petrol as it wrecks them and opens up the pores in the filter.

[80-85 husky]

ive been using petrol for years without an issue. rings only ever replaced at service or later if still in spec so no real dramas. I do replace the filters evry couple of years

I do like the idea of Kero as its a better smell and washes out better than peterhol specially now its that ulp poo. don't like it at all. Could see that stuff destroying foam that's for sure.

note that a quickly washed and oiled filter can dilute the oil and make it run to the bottom of the filter if there is a bit of solvent still in the foam. its a real trap to wring and flick dry the filter then oil it... it can stuff the oil

gear box oil Christ that must have stunk to high heaven

[oldyzman]

The poor little motor having to breathe that gearbox oil smell LOL

[OverTheHill]

yeah, ep90 gearbox/diff oil, anyone following me usually knew who it was they were behind!!. I must say also that i did use it in my DT1 gearbox as customers racing them had the old 'rounded off dogs' problem after 'not very long' so thought i'd give mine every chance & my theory being if it's good enough for differentials & car gearboxes it can only help my fragile DT box. Made the clutch hang on when cold but no problem after that---Till third gear big wheel broke into three bits & came out the bottom & fkd it [dogs were ok haha]--that was the "68/69 coarse tooth box with the selector fitting around the drum totally encompassing it for 4th/5th gear. Was the only good drum i had for a re-build once & on a dummy assembly to check the gear engagement [using the normal later 3 separate selectors] i found she went 1-2-3-5-4 as the drum encompassing selector pin engages 180 degrease around the other side & the drum tracks are machined accordingly.

[smed]

Another good reason for using proper filter oil is it is supposed to be flame retardent,not really a concern for 2T owners but 4T's can backfire through the carb & set the filter alight,When i was a wee lad i purchased a pod unifilter for my XR75,I asked the salesman should i also buy the whiz bang filter oil,Nah he said, just use motor oil,famous last words ,one day whilst attempting to bump start the bike (broken kicker,kid,no dosh to fix) it backfired & the Pod burst into flames,no worries i thought,grabbed the filter to pull it off & the carb came off too,you can guess what happened next,A raging F***ing inferno ensued,the result one BBQ'ed XR from the front of the seat forwards,bawled my eyes out for days :'(,I have seen modern 4T's with the filter singed on the inside from backfires,probably saved by proper filter oil

[OverTheHill]

that's a good point i'd never thought off. We had a few quads at work that had caught fire back into the filter. Think it was Yamaha quads mostly. Think suzuki's [maybe yams] have a gauze after the filter, never thought what it was for apart from a bit of extra filtration but could it be as a flame retardant/stopper thingy. Once again not sure if yam or suz [maybe kawy] quads used to fire once after turning ign off, just as it rolled over it's last--maybe with both valves open, must fire every lap with a crank pulser as opposed to a cam driven one--something like that. The old 3 wheeler YTM200's [if the carb flooded] would empty it into the crancase oil via the breather hose & then you'd be chasing an over-rich idle, like choke was on. Took a bit of head scratching to diagnose the first one but were ready for it after that. Think most quads are capable of that where breathers etc are made to re-cycle fumes--seen it on a big bear too.

[colmoody]

Not sure about the recycling of the turps (never done it) goes but Oldzman is on the money when it comes to using Turps to wash out filters, there is nothing better. And most importantly no damage to filter. A couple of hits with warm soapy water to finish the job and walaar.