Rated 4.8 out of 5 by 10
Rated 5 out of 5 by Angel2248 stp oil additive
It works great, I use it twice a year.
October 21, 2016
Rated 5 out of 5 by Bumblebee7 Works great
Been using this product since my car went over 100,000 miles. It's now over 200,000 I just add it midway before my next oil change.
October 9, 2016
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