Old air filter, thin grey foam length of baffles?!
Discussion
I've not seen this before when changing air filters. There's a circa 5mmm thin layer of grey foam backed material that's sitting the length and width of the filter baffles.
Is this usual, it's a OEM Volvo branded filter. The replacement (Crosslands) doesn't have this.
What's its purpose? Surely the foam impedes air flow to a degree but does prolong the filters life.
Is this usual, it's a OEM Volvo branded filter. The replacement (Crosslands) doesn't have this.
What's its purpose? Surely the foam impedes air flow to a degree but does prolong the filters life.
I've seen it many times on filtersim assuming you mean something like this?
https://www.shop4parts.co.uk/cf/assets/images/www/...
https://www.shop4parts.co.uk/cf/assets/images/www/...
Hugo Stiglitz said:
Noted its a nasty cheap thing, I'll run it for Summer then swap out before winter.
Car is a beast. Never thought I'd like a V70 but 215bhp helps alittle and those seats.
It's probably fine to use. I think crosland do ones with and without the material, but I find that sometimes when you use car parts websites with your registration number then they might come up with the one without the foam.Car is a beast. Never thought I'd like a V70 but 215bhp helps alittle and those seats.
I have in the past cut the material off an old air filter when the material is looking really dirty to get more life out of it (quite often the filter underneath looks clean). Whether or not it actually makes any difference though and whether or not the filter behind is really is clean I don't know.
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