Originally Posted By pittsburghracer
Just curious but what kind of filter. And yes viscosity can affect it but also remember the drill rpm doesn’t duplicate engine rpm. Years ago I ran 40 weight, then 30, then 10-40, now 10-30. With the RacePak I can closely watch what is going on during a pass and in the pits.


I run a Napa Gold and always have, going to put the Valvoline back in and change filter one at a time to see whats up. Thanks for the tips

footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip
73 Duster 340 street strip 12.79 @ 105