BlueDevil Stop Smoke & Engine Repair – 16 oz | Reduces Exhaust Smoke & Restores Engine Compression | Works While You Drive

I put it in and down approx 200 miles and hasn’t done a thing still burning oil . If anything it’s made it worse .

Waste of time and money

I have a 2004 gmc yukon . Thats smokes when started so bad . This stuff really helped. No smoking when started now. Doesn't leak. Does exactly what says it should. Great value, easy to add in. Over all great product so far

تم استخدامه بسيارة BMW 2007 740Li انه فعال ولاكن ليس للأبد انصح به عند كل تغيير للزيت .

My mower was smoking badly from wear. It was so thick at times that I could not see ahead of me. One treatment ended the smoke. It's not fixing the engine, but it is allowing me to mow until the engine gives up the ghost.

Great product, really works.

it made my problem worse, alot worse. The smoke came out thicker. And yes, I had a mechanic do it for me. He said it should have worked in theory and it seemed to be at first. So maybe it was a bad bottle. I don't know.