Rated 4.7 out of 5 by 48
Rated 5 out of 5 by KnoxvilleLarry Great Product
Used Marvel Mystery Oil in an attempt to free up seized chainsaw motor.
Could not be more pleased with results.
Pep Boys had the best price by far.
I am now a Marvel Mystery Oil fan for life.
Have always been a fan of Pep Boys.
October 24, 2016
Rated 5 out of 5 by Flipcard1 It is almost winter
Used Marvel Mystery Oil for more than 50 years. I was introduced to it by my father. It was used in every fuel powered system used by the company he worked for. It was critical to fuel systems in use during the winter months.
October 11, 2016
Rated 5 out of 5 by Prtopcop Great Product
Really cleans engine, my 12 year old car runs better
October 8, 2016
Rated 5 out of 5 by Homicide Awesome product
I love this product! It works wonders for my truck
August 22, 2016
Rated 5 out of 5 by SeaTurtle Works great
My engine is quiter and more throttle responsive
August 11, 2016
Rated 5 out of 5 by Zmanggg Good additive for fuel
I've been using this product for years with older cars that are driving on original injectors this product has proved to maintain as well as when I began, clean injectors in my 1995 and 2000 vehicles.
August 10, 2016
Rated 5 out of 5 by Sonofdeseret Works as advertized
I have known of this product for years. I even sold it to people when I worked in a parts store during my college years. I recently tried it on a high mileage SUV. I am now a believer.
September 10, 2016
Rated 5 out of 5 by Leswow Very good product, excellent additive for any engine.
I have used this product before and it functions well in any engine I pour it into. I believe what it states on the label and will use it again.
September 1, 2016