porsche guys say just to oil the outside of filter not inside
barncobob posted:porsche guys say just to oil the outside of filter not inside
I never oil the inside of the K&N, just the outside. I’ve never had an issue with the MAF sensor as a result.
And K&N says to clean and re-oil the outside of their air filters every 50,000 miles. They also say to use the aerosol oil spray very sparingly.
I realize that may not be practical for this crowd, but I typically go three years between air filter cleanings and never had a problem, although I don’t have EFI or a MAF sensor to worry about.
Also remember that K&N filters increase in filter rate as they collect more dust. Cleaning them too often is counter-productive.
Actually, I never oil the inside just the outside, and as per my tech, a little is all you need not a lot.
FYI, I did have both my tranny axel seals changed on my subie tranny at the beginning of last season, as they were leaking, so it may have contributed to the K&N as it splashes all over the place and with the open engine to the ground it may be the reason I had to clean them more often while AC's are closed up.
I also had to clean the whole underneath the tranny lube was all over the place.
Update... I re-read the post and honestly I never heard of anyone coating the inside but who knows anything can happen.
Spraying the unit off the car with just a bit of a film of oil is all that is needed JMM.
IaM-Ray posted:Actually, I never oil the inside just the outside, and as per my tech, a little is all you need not a lot.
FYI, I did have both my tranny axel seals changed on my subie tranny at the beginning of last season, as they were leaking, so it may have contributed to the K&N as it splashes all over the place and with the open engine to the ground it may be the reason I had to clean them more often while AC's are closed up.
I also had to clean the whole underneath the tranny lube was all over the place.
Update... I re-read the post and honestly I never heard of anyone coating the inside but who knows anything can happen.
When talking about your tranny whining you have to be careful. Maybe the tranny was whining because you didn't lube your tranny properly prior to using it.
Oh so many jokes, so little time 🤣
IaM-Ray posted:Spraying the unit off the car with just a bit of a film of oil is all that is needed JMM.
That's what I do. The previous owner of my old, now departed V70R, oiled it like he was making garlic bread. The fact that it ran like crap from the oily MAF was part of how I got a screaming deal on it. I threw a paper filter in, spritzed the MAF wire with cleaner and it was fine. A through cleaning of the K&N before putting it in at the next filter change resulted in 100,000 miles and 4 years of trouble free running.
Well sometimes you can't remove the spirit of stupid and you benefit from it. 
Same for carbs, sometimes people think it is a valve issue but it was a carb issue only (
What's interesting is.....K&N filters are so efficient ! As they get dirtier, they filter even better ! When they get real dirty, they even filter out air !......Bruce
Gordon Nichols posted:And K&N says to clean and re-oil the outside of their air filters every 50,000 miles. They also say to use the aerosol oil spray very sparingly.
I realize that may not be practical for this crowd, but I typically go three years between air filter cleanings and never had a problem, although I don’t have EFI or a MAF sensor to worry about.
Also remember that K&N filters increase in filter rate as they collect more dust. Cleaning them too often is counter-productive.
I clean mine every couple years, about the same as brake fluid change intervals. Black and dirty is the way they work.
aircooled posted:What's interesting is.....K&N filters are so efficient ! As they get dirtier, they filter even better ! When they get real dirty, they even filter out air !......Bruce
Every filter works better the dirtier it gets... right up until they bypass or collapse. It's the amount of air (or oil) they move that becomes the problem.