TR2/3/3A Foam air filters for S U's

[karls59tr]

Should they be lightly oiled or left dry?

 

[JHaydon]

Most foam filters require some type of oil to catch airborne particles. Otherwise they just slip right through the big pores in the foam.

I just re-read the AC labels on my filters last night and they say to clean in petrol and re-oil using (clean) engine oil.

ITG Filters highly recommends a product called Rock Oil Factory Eco Foam Air Filter Fluid. They used to recommend a different brand until they tested Rock Oil and found that the foam itself lasted longer.

 

[mctriumph]

The best of both worlds is to use the OE air strainers with a foam element fitted over them
oiled as per John Deere recommends. The part # is M 70127 . Cheap and OTC. You get to the car
show and slip them off till you leave. They seem to last around 5 or 6 years, but at 3.50$ each keep
a spare set on hand
Mad dog

 

[karls59tr]

The best of both worlds is to use the OE air strainers with a foam element fitted over them
oiled as per John Deere recommends. The part # is M 70127 . Cheap and OTC. You get to the car
show and slip them off till you leave. They seem to last around 5 or 6 years, but at 3.50$ each keep
a spare set on hand
Mad dog

Who sells these?

 

[mctriumph]

Your local John Deere dealer, they are OTC.
Mad dog

 

[RGK]

I put a set of these on the 250's HS6's, un-oiled. So far so good.

Air Filter Assembly Chrome Tapered 1.75 HS6

Your One Stop Shop For All Your British Automotive Parts. Order Online Today! We Have The British Auto Parts That You Are Searching For. Order Today! No Sales Tax. Fast, Courteous Service. Rich Selections. Order Hard To Find Parts. Family Owned & Operated. Fast Shipping.

bpnorthwest.com

 

[Hamish Racing]

Karl if you have carbon on intake side ( your other thread) and it’s from carb backfire foam filters can catch fire so sort your other issues first before refitting filters

 

[JHaydon]

I put a set of these on the 250's HS6's, un-oiled. So far so good.

Air Filter Assembly Chrome Tapered 1.75 HS6

Your One Stop Shop For All Your British Automotive Parts. Order Online Today! We Have The British Auto Parts That You Are Searching For. Order Today! No Sales Tax. Fast, Courteous Service. Rich Selections. Order Hard To Find Parts. Family Owned & Operated. Fast Shipping.

bpnorthwest.com

View attachment 94255

"with these washable and oil-able filters"

The K&N which those replace (according to the ad) were also intended to be oiled prior to use. K&N made their own oil specifically for cotton-gauze filters.

Dry is a lot better than no filter at all, but oiled will be even better.