W widman Joined May 27, 2002 Messages 3,354 Location Bolivia Jul 3, 2016 #1 I just graphed the 7 year air filter change history for one of my delivery vans. Changing out filters by weekly checks of the restriction gauge.
I just graphed the 7 year air filter change history for one of my delivery vans. Changing out filters by weekly checks of the restriction gauge.
H HTSS_TR Joined Apr 17, 2006 Messages 19,528 Location Lake Forest, CA Jul 4, 2016 #2 The changes are as little as 15,500 km and as long as 46,600 km of the same filter brand ?