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FORTEC Full Synthetic Differential Oil SAE 80W-140 GL-5 (2 x 1L Bottles) for Mazda RX-8 (Series 1 & 2, 2003-2012)

Heavy-duty 1-litre full synthetic racing gear oil developed for high-load differential use, with strong oil-film stability and excellent protection under heat.

$100

FORTEC™s 80W-140 GL-5 Racing Gear is a full synthetic gear oil intended for severe-duty and high-temperature use. For the Mazda RX-8, this heavier grade is best suited to the differential, where it helps maintain lubrication, protection, and stable performance under sustained load.

  • Full synthetic 80W-140 GL-5 racing gear oil in 2 x 1-litre bottle
  • Best suited to RX-8 differential service rather than the manual gearbox
  • Developed for high-load and high-temperature conditions
  • Helps maintain oil film strength and differential protection under hard use
  • Suitable for spirited street driving, track use, and limited-slip differential applications

You will gain more confidence in the car™s driveline protection during hard driving, especially where heat and load quickly overwhelm lower-spec oils.

For a more complete driveline fluid package, consider pairing this with the FORTEC 75W-90 Racing Gear Oil for the gearbox and the R-MAGIC Super Magnetic Differential Drain Plug.

Additional information

RX8 Model

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SKU FT-GO-DIF-S1S2 Categories , Types , Brand:

Related RX8 Upgrades

This racing differential oil is one of the best Mazda RX-8 upgrades you can make to your Series 1 (2003-2008) or Series 2 (2009-2012). Differential oil upgrades are among the top Aftermarket mods you can buy from FORTEC for owners who want better performance and reliability from their RX8. If you are looking for rx8 differential oil for sale in Brisbane (QLD), Sydney (NSW), Melbourne (VIC), Canberra (ACT), Adelaide (SA), Darwin (NT) or Perth (WA), you’ll find high-quality Japanese Differential upgrades at RX8 Upgrades.