I have a 91 Loyale wanted to run some seafoam through the vacuum line, according to their website it states that special precautions must be taken when adding seafoam through a vacuum line on subaru opposed engines.

will it be as effective if I feed through the vacuum line that goes from the PCV valve to the brake booster?

 

any thoughts?

 

Ben

You'll want to use the smallest vacuum line you can to limit flow, if it flows too much you run the risk of hydrolocking the engine.

 

Just make sure the engine is good and warm before you get started and let it sit for 20 minutes after the bottle is empty.

 

Don't be afraid of all the smoke, that is normal.

make sure its a vacuum line at the throttle body, otherwise you will only seafoam 2 cylinders

DOO EEEETTT!....and yeah, go for a drive if you can, it can get cloudy in a heartbeat..:grin:cheers, b