I have a 2019 Mazda3 hatchback with a manual transmission and want to change the transmission gear oil. Want to go with a quality synthetic aftermarket brand like Redline but not sure which weight the oil is because the owners manual only specifies "Mazda Long Life Gear Oil G7."
Help me find a good manual transmission oil
- Thread starter Maxfli81
- Start date
the owners manual[should]also state:
“If Mazda Long Life Gear Oil G7 cannot be obtained, use standard oil (API Service GL-4 (SAE 75W-80)”
“If Mazda Long Life Gear Oil G7 cannot be obtained, use standard oil (API Service GL-4 (SAE 75W-80)”
Redline has an application page on their website. You type in make, model, year etc. and it comes up with their recommended lubricants. Or, you can contact their customer support.
You can use Redline MT-90 or Amsoil 75W90 GL4 Manual Transmission and Transaxle Gear Lube
It is important to only use GL-4 in the manual transmission, as GL-5 spec oil has additives that are harmful to the transmission.
Redline makes an oil for the application that seems to work well for those that have changed out their fluid in their Mazda. It is Redline MTL 75W80 GL-4.
Redline makes an oil for the application that seems to work well for those that have changed out their fluid in their Mazda. It is Redline MTL 75W80 GL-4.
My honda didn't even like honda mtf2 for cold weather, pentosin mtf2 worked well- they don't make it any more tho.
Until my recent F-Type Jag, 100% of my sports cars have been manual transmissions. In the end, not once have I had a lubrication related problem or failure. (the Honda S2000 did lose it's input shaft bearing at low miles, but that was a known design issue, starved for oil)
I've used Royal purple Syncromax MT lube (it seems to be excellent) , Pennzoil MT lube, Mobil 1 ATF, and Redline MTL. My current Jag X-Type has Syncromax in it and at 225K miles, and is still shifting perfectly.
I've used Royal purple Syncromax MT lube (it seems to be excellent) , Pennzoil MT lube, Mobil 1 ATF, and Redline MTL. My current Jag X-Type has Syncromax in it and at 225K miles, and is still shifting perfectly.
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Which owners manual did you see that in? My 2019 owners manual only listed the Long Life Gear Oil G7
Pretty much any GL5 is bronze/brass safe these days.
but many have poor shifting in a MT.. not a yellow metal issue.
I've got Redline MT-90 in my 07. Not sure if that's apples to apples or not. Know its 5spd vs 6.
Updated List of MTF's (both GL-4 and GL-5)
NOTE: This list is only a “summary” list of MTFs available in the MTF Lubricant Market. It is not an endorsement nor a critique of any one fluid, nor is it implied that any one fluid will cure problems in MTs that have design problems or those that have excessive wear. A.These MTL fluids are...
bobistheoilguy.com
My apologies, I just noticed your response. I’ve downloaded the wrong year Mazda3 Owners manual which stated such.
It may have been the wrong year Owner's manual but is the same verbiage from the 2019 Workshop manual.
JHZR2
Staff member
IME this is the best suggestion. It’s superior to Redline and other fluids for retained shift feel.
Has anybody tried RedLine MTLV yet- I have 4L sitting on the shelf for a Honda application next year.
MolaKule
Staff member
The MT-LV is a Low Viscosity fluid at 6.3cSt@100C MTF.
A requirement for a 75W80 means you should seek a 10cSt@100C MTF such as the Amsoil MTF.
