Rated 4.8 out of 5 by 8
Rated 5 out of 5 by breeze1440 Work grate
My old 1985 Dodge has almost 150000 miles on it It use to burn 1Qt of oil every 1000 miles witch seem to be the norm for them 318 ci as i had a few .Then i started to see a lil blue smoke at lights. I new it was ether valve seals or the ring's so being i was really hoping to get another 50000 out of it before rebuild.I wasn't happy.Then i saw the STP Thor t i will give it a try.Not only did the blue smoke stop but when i chk the oil at the next 1000 mile mark it did not burn any.I still don't believe it so next 1000 mile mark we will see .I do hear a Lil lifter noise in the morning for a very short time sometimes .
September 13, 2016
Rated 5 out of 5 by snoopy2 Alternate use.
Used as an additive for worn out knee action shocks.
August 30, 2016
Rated 4 out of 5 by Buyercontrol Thick!!!
It's pretty good for what you need
August 8, 2016
Rated 5 out of 5 by JPerez Love this stuff
October 27, 2015
Rated 4 out of 5 by cookster Good product.
STP contains extra zink needed for high performance equipment.
August 11, 2015
Rated 5 out of 5 by Jack4319 Oil Change parts
Wonderful ... I got Valvoline oil for the car and a new filter PLUS STP oil additive all for $27. That will keep my 99 Camry running smooth for 4,000 miles.
January 3, 2015
Rated 5 out of 5 by InsertNameHere It works!
Been using STP oil treatment for 60 years in about 400 different cars, trucks, and race cars. Pouring it you can see why it works and that it is the same as always. You have to use it!
November 9, 2014
Rated 5 out of 5 by Realmenuse3pedals Works
Oil pump wasn't sucking up the 5-20 I put in so I added this and it thickens it right up
November 7, 2014