[W/kg]

I just purchased a preowned 2017 Impreza Sport 5 speed with 64,000 miles on the odo. I was lucky enough to buy it from the dealership that sold it originally and did all of the maint, so I know the drive line fluids were done at about 40,000 miles. However, the 5 speed is not shifting that well, very notchy and a bit sloppy, so I am going to change all the drive line oils. I am leaning toward Motul Gear 300 75w90 but a couple people here said it made shifts harder. I don't want that, but I do want a 100% synthetic, long lasting oil that also smooths out shifting a bit. Is there really a marked difference in feel between Motul 75w90 vs 75w80?

The OE Extra MT transmission fluid is 75w80 viscocity but is only sold in huge quantities. It’s a good idea to use 75w80 as a replacement even if it isn’t full synthetic, especially if you live anywhere with freezing winter temperatures. In Canada people have had transmisson damage by running 75w90 in the winter if you go by the service specifications, but to be fair, it’s stated that 75w90 will affect driveability.

 

[Wanfeilwong]

75w90 does take slightly more effort, but as Winter is coming I'm afraid. If I had to do it again I'd prolly use Motylgear 75w80 for the front diff. Still use 75w90 on the back though

 

[dhectorg]

WHat is the difference between

75w90 does take slightly more effort, but as Winter is coming I'm afraid. If I had to do it again I'd prolly use Motylgear 75w80 for the front diff. Still use 75w90 on the back though

I will probably go this route and use the lighter weight in the trans.

Does anyone when what is the difference between MotylGear 75w90 vs Motul Gear 300 75w90. I'm not sur which one to use in my 2017 Impreza Sport rear diff.

 

[Wanfeilwong]

The only real difference that I can tell is that Gear 300 says it's 100% Ester based synthetic while the MotylGear 300 says it's "reinforced with synthetic base stocks"

 

[wheel366]

Don't put too much faith in the "ester" base. I had redline MT-90 in my 95 Pathfinder and 2004 A4. Supposedly has a pour ping at -49F. In anything under 30 degrees I had a lot of trouble shifting. There were some times where I had to break the shifter free due to it being frozen. Now, I'm not saying the Motul isn't good but it might not be a bad idea to compare to the OEM stuff. It may be that the OEM stuff is synthetic just not ester or may contain some ester. Could be PEO based too. Now, I am just relaying my experience and with the trans only. For my diffs I used Amsoil and I can't say I noticed a difference between Amsoil and OEM. I just replaced because they were NEVER replaced.

 

[awdizzy]

WHat is the difference between


I will probably go this route and use the lighter weight in the trans.

Does anyone when what is the difference between MotylGear 75w90 vs Motul Gear 300 75w90. I'm not sur which one to use in my 2017 Impreza Sport rear diff.

How'd it turn out?

Also, where has everyone been buying their Motul Gear 300 (or MotylGear)?

 

[Wanfeilwong]

How'd it turn out?

Also, where has everyone been buying their Motul Gear 300 (or MotylGear)?

Still using motul gear 300 in both front and rear. No issues. Winters in CA are pretty mild so it didn’t seem like it made the shifting that much more difficult.
Been buying mine off Amazon.

 

[cbidwell91]

75W-90 is fine. Motul sells 75W-80 GL-5, which is what I'm using now since AMSOIL doesn't make a 75W-80. No issues and felt fine in the winter.