#REDLINE GEARBOX OIL FOR 1995 MIATA MANUAL#
#REDLINE GEARBOX OIL FOR 1995 MIATA FULL#

The Motorcraft full synthetic should not need changing for the life of the vehicle.Īs for automatic transmissions – do we have any in the club? If you have a 5-speed, don’t forget to change the oil in the shifter boot – it takes 90cc of the same oil as used in your differential.Ĭhanging transmission oil is a challenge to do without a big mess.

#REDLINE GEARBOX OIL FOR 1995 MIATA MANUAL#

In the summer or if driven competitively, MT-90 is the better choice, as it protects the gears better.įull synthetics such as Motorcraft Full Synthetic Manual Transmission Fluid (part number XT-M5-QS ), is awesome for both situations, and the current favourite on the forumsĥ-speed transmissions take 2 litres, 6-speed need 2.2 litres. That said, Redline MTL is popular with some Miata owners precisely because it is thinner and works well in our climate, with much smoother shifts when cold (ambient temps around 10 degrees C - a fairly common top-down driving temperature around Calgary!). Redline MT-90 is properly formulated for use in our transmissions. EP additive prevents the synchronizers from doing their job properly and results in hard or 'notchy' shifting.Įven if you switch to a fluid with less EP in it, it may take in excess of 3 000 kilometers for the EP to wear off and the shifting to improve. The difference between GL-4 and GL-5 is that GL5 has twice as much Extreme Pressure (EP) additive in it. While the manual says that any GL-4 or GL-5 will work, that is because GL-4 fluids are very hard to find and a GL-5 will not hurt your transmission, however, “not hurt” is very different than “perform well”, and the GL-5 fluids will not perform well in your transmission. The 6-speed (Aisin) transmission is a fussy beast. Note that the 5-speed transmissions seem to be able to stomach more varieties of oil without complaint than the 6-speeds. Many Miata owners are fussier, and prefer specific brands/types of oil. Mazda recommends any 75W-90 oil (with an optional 80W-90 if the ambient temp will be above 10 degrees C) that is rated GL-4 or GL-5 for manual transmissions. Plan on changing your differential oil every 50 000 km, even with synthetic oils, as the differential seems to really rip the oil up. The older limited-slip differentials do need a tube of friction modifier.

There is no need for limited-slip additives in the TORSEN type differential. The Redline product is popular, but any 75W-90 will work. The factory recommends any GL5 rated 75W-90 gear oil. Here is why.Ĭapacities vary depending on engine size/year. Personally, I would change the oil at least once a year, even if I was using synthetic.ĭon’t forget to change your oil filter! Use a WIX# 51365 or NAPA filter.

Yes, Rotella is a diesel engine oil, but Rotella T and M1 TDT have been granted an API SM rating, which is catalytic converter safe. The forums currently favour Mobil 0W30 full synthetic oil with 15 000 km change intervals, as well as SHELL’s Rotella Synthetic 5W-40. See this thread for more info on dino vs. If you change your oil frequently (2x a year - spring and mid summer - and/or every 3 000 km) then dino oil is just fine. Regarding dino (petroleum-based) oils vs synthetics, there is no question synthetics are better. The factory recommends 10W-30, for most temperature ranges, 5W-30 for winter use and 5W-20 for the NC (third generation MX-5) series.

Redline gearbox oil for 1995 miata