Kendall GT-1 Competition 20w-50 Motor Oil

Kendall GT-1 Competition 20w-50 Motor Oil

0.00 LBS

Kendall GT-1 Competition SAE 20w-50 High Zinc Racing Motor Oil

Kendall GT-1 Competition Motor Oil 20w-50 with LiquiTek protection additive is a high-quality, conventional automotive engine oil designed for use in gasoline fueled passenger cars and light trucks that do not require an ILSAC GF-6 oil for warranty coverage. The SAE 20W-50 viscosity grade is especially recommended for use in high-performance street engines and competition engines, including both gasoline- and alcohol-fueled racing vehicles. 

Kendall GT-1 Competition Motor Oil 20w-50 with LiquiTek also contains a boosted level of zinc dialkyldithiophosphate (ZDDP) additive to provide additional wear protection and enhanced oxidation resistance in the most demanding applications. It is particularly recommended for use in turbocharged engines and in high-performance engines with flat-tappet camshafts, especially during the critical break-in period.

It also has the following benefits:

  • Exclusive Liquid Titanium protection additive provides extra protection against engine wear
  • Formulated for engines equipped with turbochargers or superchargers
  • Excellent resistance to viscosity and thermal breakdown at high temperatures
  • Protects against sludge and varnish formation
  • Protects against rust and bearing corrosion
  • Highly resistant to foaming
  • High ZDDP content for additional wear protection for engines with flat-tappet camshafts
  • Racetrack-proven performance

Verify this is the right Kendall product for your vehicle here


  • Gasoline-fueled passenger cars, light trucks and sport utility vehicles that do not require an ILSAC GF-5 oil for warranty coverage
  • Competition engines and high-performance street engines

29 Reviews | Write a Review.

  • 5
    No Oil better than Kendall GT-1

    Posted by Randy May on Nov 13 2019

    I began using Kendall GT-1 Competition Motor Oil back in the late 60's early 70's. I have used it in all of my vehicles and equipment such as farm tractors, etc. consistently. I have never lost an engine, never had an "oil eater", never had valve train noise including lifters. Absolutely the finest oil one can put in a combustion engine, baring none!

  • 5
    Best oil for Flathead Fords

    Posted by Walt on Aug 29 2019

    Keeps my Flathead motor running well.

  • 5

    Posted by TR on Mar 29 2019

    Been using Kendall GT in my Harleys for years. 70W, 50W & 20W50. Current Harley 28 years old.

  • 5
    Best for a Mercedes 560SEC which likes higher zinc

    Posted by James on Mar 04 2019

    I have a 1990 560SEC which has a flat tappet camshaft, calling for oil with higher zinc content. I didn't want to go with a partial synthetic (Brad Penn, which is also substantially more money $30 per case plus more in shipping.) I liked that this has titanium as an additive. A very modern oil that works well on "chronologically gifted" cars like mine with 332K miles on it. I will tell you that I had Castrol 20-50 in it with Liqui Moly MoS2 anti-friction as a separate additive. When I started the car with this new mixture of Kendall it was like a night and day difference in my engine smoothing out! Can't say enough good things!

  • 5
    Best non synthetic oil out there for your classic 911

    Posted by Evan on Sep 15 2018

    I have used this oil in both of my air-cooled Porsches and it has all the right stuff from an additive package and viscosity range for these cars. The extra zinc gives peace of mind and the price is very competitive. I have done Blackstone analysis on both cars and very pleased with how it holds up.

  • 5

    Posted by George on Aug 20 2018

    None better!

  • 5
    Best oil

    Posted by Bud Moy on Jul 07 2018

    Hard to find ,but nice its available on line. Thanks to PSC Blessings from Bud

  • 5
    Good Stuff

    Posted by Marc on May 13 2018

    But hard to find, actually impossible, where I live so I have to order it on-line from PSC. That said, I get what I want and it's no more expensive than if I could get it locally...I WIN!!! I like using Kendal because way back when, I found that a lot of motorcycle shops used and recommended it. Air cooled motorcycle engines can experience greater temperature stress than liquid cooled cars for the most part. So they used this for a reason. If it's good enough for them it's great for my cars...and bikes.

  • 5
    Kendall 20w/50 comp. oil

    Posted by rocky on May 11 2018

    good stuff been using Kendall for years. why don't you carry Kendall 50 comp. oil ?

  • 5
    1974 911

    Posted by Jack on Apr 24 2018

    1974 911 requires 20W-50 oil with high ZDDP content. Kendall GT-1 is the best oil I have found that meets or exceeds all the requirements for older air cooled 911's. PSC has good prices and excellent service.

How to Find the Right Lubricant
Why Lubricant Additives are Important
Should You Change Your Oil Every 3,000 Miles?
How Does Cold Weather Affect Your Car Lubricants?
All About Passenger Car Engine Oil
Everything You Need to Know About Recycling Motor Oil
DIY: A Guide on How to Change Your Vehicle’s Engine Oil
Conventional Passenger Car Engine Oil
Bizrate 2023 Platinum Seven Time Winner

Safety Data Sheet
Product Data Sheet

Due to these products being hazardous, an additional shipping charge of $25.00 is automatically added to smaller "Ground Shipments". If you can order any combination of products that makes your total cart weight over 150 lbs. (which is considered "Freight Shipment"), this additional fee is waived. This can equate to considerable savings on shipping.

Sunoco Race Fuels is offering a Free Drum Pump with the purchase of a 54 Gallon Drum of Sunoco E85-R 99 Octane Race Fuel.
To add the free drum pump, first add the '54 Gallon Drum' to the cart, then click the blue 'Add FREE Drum Pump' button.

By entering your amount in the “Quantity” field, the price will automatically reflect the bulk discount below.