- 11,207

- Adrian, Mich.
- cargorat323
- CargoRatt
I'm looking for information on how far HP and PP drop according to mileage gained. For example, car with no oil change, at what point (miles) does HP start dropping and what is the rate that it continue to drop and is there a point that it stops dropping. I could have sworn there was a thread on this where someone researched it, but after many attempts searching, I can't find anything. Any help would be appreciated. Thanks.