Red Line 40WT Synthetic Racing Oil (1 Qt.)

Red Line 40WT Synthetic Racing Oil (1 Qt.)
Item #:RDL10404
Availability:Usually ships the next business day
Our Price:$8.97
Ground Shipping Only. No PO Boxes
  • Red Line 40WT
    Synthetic Racing Oil

  • 40WT is equivalent to 15W40

  • Improved frictional properties

  • Special detergents for improved
    lubricity and less detonation

  • Polyol ester base stocks provide
    more stability and film strength
    when exposed to excess fuel dilution

  • Has no less than 2200ppm of zinc
    and phosphorus for antiwear

  • Offers 2-4% more power than oil
    of a similar viscosity

  • Improved protection at startup,
    and lower oil temps



  • Phosphorus, avg PPM: 2500

  • Zinc, avg PPM: 2400

  • SAE Viscosity Grade: 15W40

  • Vis @ 100°C, cSt: 13.8

  • Vis @ 40°C, cSt: 98

  • Viscosity Index: 143

  • CCS Viscosity, Poise, @*C: 33@-15°C

  • Pour Point, °C: -45

  • Pour Point, °F: -49

  • Flash Point, °C: 275

  • Flash Point, °F: 527


- Recommendation: Change these oils more frequently than regular motor oils. For use where temperatures may be high and when a wide range in RPMs and speeds will be encountered.


- NOTE: Not recommended for street use.

Product Reviews for Red Line 40WT Synthetic Racing Oil (1 Qt.)

  • "Overall experience is very good, prices are decent, and of course I'm glad that you guys open for us during this crisis, recommending website." (4/11/20)

  • "1st time shopping at Auto Barn. Shopping was easy and pain free." (5/10/20)

  • "Auto Barn had exactly what I was looking for and finding it was a "snap" (5/9/20)

  • "All great-price, delivery time" (5/7/20)

Read All Testimonials