This is sort of of topic but I was wondering if anyone knew it it was safe to use Seafoam on a gm 3.8 with a composit upper plenum? I want to try it on my girlfriends care but I'm not sure what would happen. If anyone has any info it would be greatly appreciated.

 

Seafoam works for basically any engine, gas, diesel, 2 stroke, etc. Plenum material doesnt matter.

 

thats what i needed to know thanks