The Ford Barn - View Single Post

Ron in Quincy · 05-15-2018, 07:03 AM

I use STP 100 percent in Transmission and 50 percent in rear differential plus 50 percent 600W. The STP is constantly being moved up by the transmission gears and the same action takes place in the differential with the ring gear.

I do not use STP in the engine as it all ends up in the bottom of the pan and there it stays !!! . A dragster mechanic told me the reason they use STP in their engine is because it is set up very loose, usually only make two runs and the engine is torn down and new oil and STP added ?

Just my opinion,

Ron

05-15-2018, 07:03 AM	#9
Ron in Quincy Senior Member Join Date: May 2010 Location: Quincy, CA. Posts: 1,708	Re: Another question about oil viscosity I use STP 100 percent in Transmission and 50 percent in rear differential plus 50 percent 600W. The STP is constantly being moved up by the transmission gears and the same action takes place in the differential with the ring gear. I do not use STP in the engine as it all ends up in the bottom of the pan and there it stays !!! . A dragster mechanic told me the reason they use STP in their engine is because it is set up very loose, usually only make two runs and the engine is torn down and new oil and STP added ? Just my opinion, Ron