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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)

RX8 80W-140 gear oil is supplied as two litres of full synthetic GL-5 lubricant for rear differential servicing on Series 1 and 2.

Two angled white RX8 80W-140 gear oil bottles with FORTEC Racing Gear labels

$100

RX8 80W-140 gear oil from FORTEC is a two-litre full synthetic GL-5 lubricant pack for rear differential servicing. It suits Mazda RX8 Series 1 and Series 2 owners seeking a stated 80W-140 grade for planned maintenance. Two 1-litre bottles provide a practical quantity to have ready before draining the existing differential fill. The supplied quantity is split between two bottles, making it simple to account for the lubricant before work begins.

RX8 80W-140 Gear Oil Details

  • Two 1-litre bottles form the supplied two-litre service pack for planned maintenance.
  • The full synthetic formulation is specified as a GL-5 differential lubricant.
  • The stated 80W-140 GL-5 grade gives owners a clear lubricant specification when selecting differential oil.
  • Rear driveline servicing under heat and load is the intended application for this lubricant.
  • Series 1 and Series 2 coverage makes it a model-range service option from 2003 to 2012.

For rotary enthusiasts, RX8 80W-140 gear oil provides a clear lubricant choice when arranging rear driveline maintenance. A fresh, known-grade fill avoids relying on an unknown existing oil. The two-bottle format helps organise the job before the car is off the road, whether you buy RX8 differential oil in Australia for a Series 1 or Series 2. Choosing the stated grade supports a more deliberate approach to routine differential servicing.

Pair a broader driveline refresh with the AUTOEXE Sports Clutch Kit when clutch work is already planned. Owners comparing FORTEC differential oil in Australia can review the lubricant range through the FORTEC official site.

Additional information

RX8 Model

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

Related RX8 Upgrades

This 80w140 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 service 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 80w140 diff 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.

Frequently Asked Questions

Is this FORTEC 80W-140 gear oil suitable for my Series 1 or Series 2 RX8?

FORTEC Full Synthetic Differential Oil SAE 80W-140 GL-5 is listed for Series 1 RX8 models from 2003-2008 and Series 2 RX8 models from 2009-2012.

How much oil is included in this RX8 differential oil pack?

This FORTEC RX8 differential oil pack contains two 1-litre bottles, providing two litres in total for a planned rear differential oil change.

What grade is this differential oil?

FORTEC Full Synthetic Differential Oil is an SAE 80W-140 GL-5 lubricant. The stated grade identifies it for differential use.

Is this oil fully synthetic?

Yes. FORTEC Full Synthetic Differential Oil SAE 80W-140 GL-5 uses a full synthetic formulation intended to support oil-film stability when the differential is working under heat.

Can I use this oil for the RX8 rear differential?

FORTEC Full Synthetic Differential Oil SAE 80W-140 GL-5 is supplied for RX8 rear differential servicing. Its 80W-140 GL-5 grade is stated for differential use under heat and load.

Why replace the differential oil in an RX8?

Replacing the rear differential oil allows you to service the driveline with a known lubricant grade and quantity rather than relying on an unknown existing fill. This FORTEC pack is intended for planned rear differential maintenance on Series 1 and Series 2 RX8 models.