i used it. not sure it made difference or not.

You can see how well this pulls gunk from the engine. For me it all collected onto the filter since my oil wasn’t that old. Oil came out dark brown and filter was pitch black with sludge. Beautiful additive for any car

Clearly washed out a load of crap

I'm not a scientist or engineer, but if this product does half of what it claims it's worth ten measly dollars. I used the product as instructed and can say I am glad that what came out of my engine is no longer in there! Without removing the valve covers, oil pan, etc it's really hard to say if this stuff is working but I can confidently tell you it will not cause any issues and it worked great for me. I used it in my W211 E55 AMG with no issues. Will consider purchasing again in another 25k miles.

I have used several times and it works as advertised.

Drove the car home and into the garage. Added 1.5 cans of the Pro-Line Engine Flush and let the engine run for 10 minutes. Drained the oil and it came out thick and black. Just bought the car less than a month previously, and the service records indicated that the engine had been flushed 8k miles earlier. Not sure what they used, but the Pro-Line appeared to get out a lot more gunk.

Made the oil drain faster like it was water and made a huge difference after the oil change. Would recommend

worked will use again.

My e46 (325Ci) started buring oil around 78k. Tried flushing with this product and my oil burning dissappeared.

I used this product before doing my lower oil pan on my Rabbit. 155k miles of unknown maintenance history, the old oil came out black and after dropping the pan the crankcase was surprisingly clean! Will probably do another treatment next oil change (LM Molygen) to get any leftover sludge or deposits.