I just picked up a 92 hatch with a crvtec swap in it. I was just wondering what weight oil I should be running in this engine. I'm guessing mobil1 5w30 is gonna be the right stuff, but figured I'd bounce it off you guys and see what the consensus is. I tried the search feature but couldn't figure out what terms to use to get the answer I'm looking for.

TIA

 

great choice. Thats what i prefer to run as well in a b series motor.

 

just run what the previous owner was running, and if you dont know, use the mobil 1. Supposively changing the type of oil (synthetic to conventional) is bad for the seals

 

this is true about synthetic to conventional. also were any internals replaced on the engine. if so it might depend on which oil you want to use for viscosity

 

It's a stock b20b bottom end with a b16a head. Only internal part swapped was a set of CTR cams... I'm just gonna go with the Mobil1 5w30 and hope for the best...

 

run synthetic and you should be ok!!!