Don’t use Sea Foam Spray in a diesel intake [SOLVED]

That’s a great question Dane. Diesel engine ignition (compression) works differently than gasoline (spark ignition). If you add a secondary source of fuel through a diesel engine’s air intake you can cause the engine to “runaway”. Runaway will not only ruin the engine, it is dangerous. Just keyword “runaway diesel” on YouTube and check out some of the scary videos.

Are you sure about causing the runaway? If you spray too much, you will notice revs building and therefore give you a sign when to stop. In terms of adding this to intake while engine is running, it works like fuel…be it gasoline or diesel…it will simply burn off and no it will not cause runaways if you are careful.

Hi Pete – thanks for the question. Sea Foam Motor Treatment is capable of running a diesel engine without the presence of diesel fuel. Sea Foam Spray is Sea Foam Motor Treatment in an aerosol can. The threat of runaway is definitely there, and we do not recommend using Sea Foam Spray in diesel engines, regardless of user skill or knowledge.