Otto, My 98 Suburban with 454 V8 has one of those filter indicators. I need a new one. It's labeled Donaldson who also make big truck air cleaners. Many KW and Peterbilt trucks I drove had dash gauges for both the air filter restriction and fuel filter restriction. The fuel one saved my bacon more than once, especially in winter. We carried a spare fuel filter in the tool box.

Last edited by Peggy M; 03/10/2024 5:22 PM. Reason: fix quote
1951 3800 1-ton
"Earning its keep from the get-go"
In the DITY Gallery
1962 261 (w/cam, Fenton headers, 2 carbs, MSD ign.), SM420 & Brown-Lipe 6231A 3spd aux. trans, stock axles & brakes. Owned since 1971.