Need a real answer on transmision oil
Originally Posted by johny719
wait before i go out to try MT-90 or BG synchroshift... are there any additives in either of those 2 that are bad for our tranny? I think earlier in this thread, someone said that Redline MT-90 is bad for our brass...
I've tried both Redline and BG in Evos. I would go for BG Syncroshift. The Redline had a notchiness when cold that BG just does not have. When warmed up it is even better.
Last edited by erikgj; Dec 30, 2004 at 06:50 PM.
The 5 speed transmissions in the EVO 4-8 tend to shift best with a GL-4 gear oil that meets specification for synchromesh. Like several have stated here and there on this forum, do not use a GL-5 in the transmission. I would avoid using any gear oil that claims to be GL-3, 4 & 5 spec. Instead, option only for a GL-4 oil that meets.....specification for synchromesh. These oils will improve the effectiveness of the synchronizers and that means a better shifting transmission.
GL-5 oils should not be used in the Mitsubishi transmission because they are too slippery and reduce the effectiveness of the synchronizer and you don't want that because the synchros basically act like brakes, their job is to bring the speed of the various transmission components up to the same “synchronized” speed with one another so the engagement teeth mesh at the same speed and don't get all torn up.
When it comes to the 6 speed Mitsubishi specifies the Diaqueen Super Multi Gear Oil, part #MZ313376. Could you use a different oil in this transmission? Most likely you could but consider this, Mitsubishi rarely uses the phase "exact equivalent" and when they state to use the Diaqueen SMGO or the "exact equivalent" it's probably best to follow the advice.
Now I'm going to hijack this thread for a moment.
In the transfer case and rear differential you must use a GL-5 "Hypoid" type gear oil. The transfer case features hypoid gears to transmit that power to the drive shaft. The word hypoid is short for hyperboloid which refers to the design of these gears. All you need to know is that hypoid gears; don’t share a common axis, run quiet (for the most part) and they are a strong design. Yet by design the gear teeth must slide across one another during their meshing and this is why you must us a GL-5 Hypoid type gear oil in the transfer case and rear end, you need that slippery oil here. Use the wrong oil and the transfer case will start howling and growling within a couple tanks of gas. Mitsubishi specifies the Diaqueen LSD Gear Oil in the transfer case and rear end of the EVOs. This oil is a single viscosity, 90 weight, and the part number is #377610. If you can’t find this oil you must find a gear oil that meets the GL-5 Hypoid specification. Again this oil must ONLY meet GL-5 preferably 90 weight. Do not use a gear oil that claims to be GL-3, 4 & 5. These one size fits all type oils are not recommended anymore than a one heat range fits all spark plug. Lastly, multi viscosity index modifiers and dyes both reduce the film strength of the oil; they take up valuable parking spaces on the molecular level reducing film strength and that’s what the transfer case and rear end both need.
Thanks for the space,
Jon@TRE
www.teamrip.com
GL-5 oils should not be used in the Mitsubishi transmission because they are too slippery and reduce the effectiveness of the synchronizer and you don't want that because the synchros basically act like brakes, their job is to bring the speed of the various transmission components up to the same “synchronized” speed with one another so the engagement teeth mesh at the same speed and don't get all torn up.
When it comes to the 6 speed Mitsubishi specifies the Diaqueen Super Multi Gear Oil, part #MZ313376. Could you use a different oil in this transmission? Most likely you could but consider this, Mitsubishi rarely uses the phase "exact equivalent" and when they state to use the Diaqueen SMGO or the "exact equivalent" it's probably best to follow the advice.
Now I'm going to hijack this thread for a moment.
In the transfer case and rear differential you must use a GL-5 "Hypoid" type gear oil. The transfer case features hypoid gears to transmit that power to the drive shaft. The word hypoid is short for hyperboloid which refers to the design of these gears. All you need to know is that hypoid gears; don’t share a common axis, run quiet (for the most part) and they are a strong design. Yet by design the gear teeth must slide across one another during their meshing and this is why you must us a GL-5 Hypoid type gear oil in the transfer case and rear end, you need that slippery oil here. Use the wrong oil and the transfer case will start howling and growling within a couple tanks of gas. Mitsubishi specifies the Diaqueen LSD Gear Oil in the transfer case and rear end of the EVOs. This oil is a single viscosity, 90 weight, and the part number is #377610. If you can’t find this oil you must find a gear oil that meets the GL-5 Hypoid specification. Again this oil must ONLY meet GL-5 preferably 90 weight. Do not use a gear oil that claims to be GL-3, 4 & 5. These one size fits all type oils are not recommended anymore than a one heat range fits all spark plug. Lastly, multi viscosity index modifiers and dyes both reduce the film strength of the oil; they take up valuable parking spaces on the molecular level reducing film strength and that’s what the transfer case and rear end both need.
Thanks for the space,
Jon@TRE
www.teamrip.com
Originally Posted by GEARS
The 5 speed transmissions in the EVO 4-8 tend to shift best with a GL-4 gear oil that meets specification for synchromesh. Like several have stated here and there on this forum, do not use a GL-5 in the transmission. I would avoid using any gear oil that claims to be GL-3, 4 & 5 spec. Instead, option only for a GL-4 oil that meets.....specification for synchromesh. These oils will improve the effectiveness of the synchronizers and that means a better shifting transmission.
GL-5 oils should not be used in the Mitsubishi transmission because they are too slippery and reduce the effectiveness of the synchronizer and you don't want that because the synchros basically act like brakes, their job is to bring the speed of the various transmission components up to the same “synchronized” speed with one another so the engagement teeth mesh at the same speed and don't get all torn up.
When it comes to the 6 speed Mitsubishi specifies the Diaqueen Super Multi Gear Oil, part #MZ313376. Could you use a different oil in this transmission? Most likely you could but consider this, Mitsubishi rarely uses the phase "exact equivalent" and when they state to use the Diaqueen SMGO or the "exact equivalent" it's probably best to follow the advice.
Now I'm going to hijack this thread for a moment.
In the transfer case and rear differential you must use a GL-5 "Hypoid" type gear oil. The transfer case features hypoid gears to transmit that power to the drive shaft. The word hypoid is short for hyperboloid which refers to the design of these gears. All you need to know is that hypoid gears; don’t share a common axis, run quiet (for the most part) and they are a strong design. Yet by design the gear teeth must slide across one another during their meshing and this is why you must us a GL-5 Hypoid type gear oil in the transfer case and rear end, you need that slippery oil here. Use the wrong oil and the transfer case will start howling and growling within a couple tanks of gas. Mitsubishi specifies the Diaqueen LSD Gear Oil in the transfer case and rear end of the EVOs. This oil is a single viscosity, 90 weight, and the part number is #377610. If you can’t find this oil you must find a gear oil that meets the GL-5 Hypoid specification. Again this oil must ONLY meet GL-5 preferably 90 weight. Do not use a gear oil that claims to be GL-3, 4 & 5. These one size fits all type oils are not recommended anymore than a one heat range fits all spark plug. Lastly, multi viscosity index modifiers and dyes both reduce the film strength of the oil; they take up valuable parking spaces on the molecular level reducing film strength and that’s what the transfer case and rear end both need.
Thanks for the space,
Jon@TRE
www.teamrip.com
GL-5 oils should not be used in the Mitsubishi transmission because they are too slippery and reduce the effectiveness of the synchronizer and you don't want that because the synchros basically act like brakes, their job is to bring the speed of the various transmission components up to the same “synchronized” speed with one another so the engagement teeth mesh at the same speed and don't get all torn up.
When it comes to the 6 speed Mitsubishi specifies the Diaqueen Super Multi Gear Oil, part #MZ313376. Could you use a different oil in this transmission? Most likely you could but consider this, Mitsubishi rarely uses the phase "exact equivalent" and when they state to use the Diaqueen SMGO or the "exact equivalent" it's probably best to follow the advice.
Now I'm going to hijack this thread for a moment.
In the transfer case and rear differential you must use a GL-5 "Hypoid" type gear oil. The transfer case features hypoid gears to transmit that power to the drive shaft. The word hypoid is short for hyperboloid which refers to the design of these gears. All you need to know is that hypoid gears; don’t share a common axis, run quiet (for the most part) and they are a strong design. Yet by design the gear teeth must slide across one another during their meshing and this is why you must us a GL-5 Hypoid type gear oil in the transfer case and rear end, you need that slippery oil here. Use the wrong oil and the transfer case will start howling and growling within a couple tanks of gas. Mitsubishi specifies the Diaqueen LSD Gear Oil in the transfer case and rear end of the EVOs. This oil is a single viscosity, 90 weight, and the part number is #377610. If you can’t find this oil you must find a gear oil that meets the GL-5 Hypoid specification. Again this oil must ONLY meet GL-5 preferably 90 weight. Do not use a gear oil that claims to be GL-3, 4 & 5. These one size fits all type oils are not recommended anymore than a one heat range fits all spark plug. Lastly, multi viscosity index modifiers and dyes both reduce the film strength of the oil; they take up valuable parking spaces on the molecular level reducing film strength and that’s what the transfer case and rear end both need.
Thanks for the space,
Jon@TRE
www.teamrip.com
Thanks for that post... Very informative..
I've been researching this myself and haven't found answers till now.
Originally Posted by GEARS
The 5 speed transmissions in the EVO 4-8 tend to shift best with a GL-4 gear oil that meets specification for synchromesh. Like several have stated here and there on this forum, do not use a GL-5 in the transmission. I would avoid using any gear oil that claims to be GL-3, 4 & 5 spec. Instead, option only for a GL-4 oil that meets.....specification for synchromesh. These oils will improve the effectiveness of the synchronizers and that means a better shifting transmission.
GL-5 oils should not be used in the Mitsubishi transmission because they are too slippery and reduce the effectiveness of the synchronizer and you don't want that because the synchros basically act like brakes, their job is to bring the speed of the various transmission components up to the same “synchronized” speed with one another so the engagement teeth mesh at the same speed and don't get all torn up.
Jon@TRE
www.teamrip.com
GL-5 oils should not be used in the Mitsubishi transmission because they are too slippery and reduce the effectiveness of the synchronizer and you don't want that because the synchros basically act like brakes, their job is to bring the speed of the various transmission components up to the same “synchronized” speed with one another so the engagement teeth mesh at the same speed and don't get all torn up.
Jon@TRE
www.teamrip.com
Thanks for the info!
Matt
Just be concerned with the oil meeting the specification that is in your owners manual, this is way more important than the brand name.
Have you guys tried 3rd gear power slides in a big parking lot yet? I love this car
Have you guys tried 3rd gear power slides in a big parking lot yet? I love this car
Thread Starter
Newbie
Joined: Aug 2003
Posts: 56
Likes: 0
From: La Mesa CA
Originally Posted by GEARS
Have you guys tried 3rd gear power slides in a big parking lot yet? I love this car
Taking the dirt road home will just have to wait till I'm bored with her.
Until then, I'm visiting parking lots late at night and scribbling the AWD signature all over them
Until then, I'm visiting parking lots late at night and scribbling the AWD signature all over them
Last edited by GEARS; Jan 2, 2005 at 05:58 PM. Reason: spelling error
Evolved Member
Joined: Dec 2003
Posts: 1,194
Likes: 0
From: malaysia - south east asia
i cant seem to find a SAE90 gear oil for my transfer case. Would it be alright if i were to use Motul Gearbox 80W-90 or Motul Motylgear 75W-90 or 80W-140 for both my rear axle and transfer case? These oil are semi synthetic based....
