SONICSUPRA IS BACK!!
if i'm looking at my back main seal how can i tell it is bad? will it be leaking oil? how about the front main seal? will it also leak oil? too see the front main seal i have to remove the crank pulley and timing cover right? is there anyway to tell w/out taking all that off? even if the seals still look okay should i go ahead and replace them while the engine is not in the car yet?