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BruceTS · 10-13-2005, 09:19 PM

A few years ago I saw a demo of this air filter at the Offroad Expo, but for the life of me I couldn't remember the name brand, so like everyone else I purchased an Amsoil brand. Okay, there's a huge difference in the quality of the Trueflow VS the Amsoil, in relation to construction. I remember Gadget making a post that he didn't like the new design of the Amsoil filter compared to the earlier one???? Then when I saw Charle's filter(older version) I knew why, they really cheapened the design. The Trueflow filter has a solid frame around the foam inner, that took a bit of persuation to get into my air box. It fit very tight, but this is a good thing, unlike the Amsoil that didn't seal well at all. The bottom of the airbox there are spring loaded clips that lock the filter against the housing. The Amsoil's design doesn't clip in at all, thus causing a very poor fit.

I've attached 3 photo's showing a front view and the solid frame that retains the filter, then one showing the back side, where you can clearly see it has a larger surface area exposed and finally one showing the poor construction of the Amsoil filter.

Cleaning the filter is similar to the Amsoil, but when it comes to lubing, they have a spray can, unlike the bottle that you have to pour over, then try and work into the foam, if you've done it, you know how messy it can get.

As for filtration, they are both 2-stage foam filter, but because of the construction, I think the Trueflow should be much better. The demo at the Expo, showed it filtered better than a K&N or a stock paper, without causing any additional restriction in air flow.

10-13-2005, 09:19 PM	#1 (permalink)
BruceTS Contributing Member Join Date: Nov 2003 Posts: 2,317	Trueflow air filter VS Amsoil A few years ago I saw a demo of this air filter at the Offroad Expo, but for the life of me I couldn't remember the name brand, so like everyone else I purchased an Amsoil brand. Okay, there's a huge difference in the quality of the Trueflow VS the Amsoil, in relation to construction. I remember Gadget making a post that he didn't like the new design of the Amsoil filter compared to the earlier one???? Then when I saw Charle's filter(older version) I knew why, they really cheapened the design. The Trueflow filter has a solid frame around the foam inner, that took a bit of persuation to get into my air box. It fit very tight, but this is a good thing, unlike the Amsoil that didn't seal well at all. The bottom of the airbox there are spring loaded clips that lock the filter against the housing. The Amsoil's design doesn't clip in at all, thus causing a very poor fit. I've attached 3 photo's showing a front view and the solid frame that retains the filter, then one showing the back side, where you can clearly see it has a larger surface area exposed and finally one showing the poor construction of the Amsoil filter. Cleaning the filter is similar to the Amsoil, but when it comes to lubing, they have a spray can, unlike the bottle that you have to pour over, then try and work into the foam, if you've done it, you know how messy it can get. As for filtration, they are both 2-stage foam filter, but because of the construction, I think the Trueflow should be much better. The demo at the Expo, showed it filtered better than a K&N or a stock paper, without causing any additional restriction in air flow. Last edited by BruceTS; 06-02-2007 at 07:14 AM.