I just switched to Thunder Tiger filters due to anothers satisfaction.
Definatley a Better design, the white elements seem more dense than the Motor Saver grey. Are easier to clean and see when the entire filter is oiled.
Grease on the foam sounds good.Although I was/am satisfied with the foam tension against the ends, I've bein looking at a good clean oily foam print on the white cap & base.
The closed end cap makes all the air go thru the filter. Not like the motor saver only after the secondary filter end screen plugs up.
Recently tryed the motor saver primary outter over the TTR and there was
at least 50% more dirt on the outside of the TTR secondary and still whistle clean inside. Using Traxass filter oil cauce I got it, and its a nice Red
Seems as sticky as that un-holey Black stuff Huskavarna chain saw stuff