A cautionary tale for DIYer's

[strat61caster]

Originally Posted by allowe

Has it made any difference in shifting? I'm about to change my tranny and diff fluids

I did Motul 300 at 30k miles and I'm now at 60k, any difference from OE was nigh unnoticeable and likely placebo. I think I'll try something different next week but I won't dissuade anyone from using Motul, it certainly did it's job.

[FRS Justin]

So since you drained the transmission 2 times after putting the new stuff in are you sure you have enough in it???? might want to have a whole six pack on stand by....

[churchx]

strat61caster: from what i read here about experiments with different oils, 1) worth be careful with amount of oil changed, as gear switch feel was different with both under & over filling, 2) i guess most did targeting enhancing of cold gear switching in cold climates. So maybe different choice then Motul300 indeed will be better. Apart from Motul, Redline MTL 70W80 was often mentioned, so did Pentosin MTF2 75W80. Though they are not as universal as M300 and for diff one will need different oil then.

[WNDSRFR]

Originally Posted by Teseo

Damn, 180k miles. Any problems at all?

Just noticed, I mistyped. The car only has 108,000 miles not 180,000. And no. The only thing I've done is change the oil, wash and wax, clean the interior, filled up the windshield washer, new wiper blades, new battery, gas and lots of tires. At this point in my VW's life it had gone to the shop at least 50 times to have everything you could imagine to be repaired or replaced at least once. Some things like water pumps and coilpacks many times.
The only problems I have with the FR-S is the drivers side window rubber needs ArmorAll regularly to keep from pinching (since day 1) Should've gotten it fixed under warranty but I hate to bring it to the dealer for any reason. The only other "problem" is the driver's door trying to cut my leg off anytime I park at any up angle. And I have an angled driveway.

[radroach]

Originally Posted by WNDSRFR

The only other "problem" is the driver's door trying to cut my leg off anytime I park at any up angle. And I have an angled driveway.

Captain obvious here, have you tried parking in the opposite facing direction so that gravity holds the door open rather than closed?

[dostoyevsky]

One of my bolts snapped while I was tightening the fibre undercover, your good, I now have a screw stuck inside, and I didn't even put too much pressure.

[strat61caster]

Originally Posted by churchx

strat61caster: from what i read here about experiments with different oils, 1) worth be careful with amount of oil changed, as gear switch feel was different with both under & over filling, 2) i guess most did targeting enhancing of cold gear switching in cold climates. So maybe different choice then Motul300 indeed will be better. Apart from Motul, Redline MTL 70W80 was often mentioned, so did Pentosin MTF2 75W80. Though they are not as universal as M300 and for diff one will need different oil then.

It'll be interesting considering Motul is so loved, I'm leaning towards Redline MT90 as my concern is with autox/track usage not cold shifting as the OE fill and the Motul were fine, not perfect shifting, but pretty good. The Pentosin is probably my next choice, after that I might just go back to Motul if neither of those wow me or maybe another option. It's mostly out of curiosity as I didn't have as strong a reaction to the Motul as other people have.

I still have some Motul 300 left over from the 30k mile change (4L-2.2L-1.3L=0.5L left) that I'll be putting in the differential along with a fresh liter, 'cause I'm cheap and it doesn't appear that fluid type has a big effect on the way this Torsen operates.


I appreciate the suggestions! I hadn't considered leveling the car before the fluid swap but now that you mention it I probably should.

[Darkrune]

When I was an Evo X guy people swore by redline.

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[churchx]

But then again some also commented that redline can be hit or miss, and they had better experience with motul (which also seems to be most popular by this poll).

[strat61caster]

Originally Posted by churchx

But then again some also commented that redline can be hit or miss, and they had better experience with motul (which also seems to be most popular by this poll).

Yeah, I'm experimenting for the sake of experimenting, we're pushing this thread a bit off topic though...

[Icecreamtruk]

Originally Posted by strat61caster

It'll be interesting considering Motul is so loved, I'm leaning towards Redline MT90 as my concern is with autox/track usage not cold shifting as the OE fill and the Motul were fine, not perfect shifting, but pretty good. The Pentosin is probably my next choice, after that I might just go back to Motul if neither of those wow me or maybe another option. It's mostly out of curiosity as I didn't have as strong a reaction to the Motul as other people have.

I still have some Motul 300 left over from the 30k mile change (4L-2.2L-1.3L=0.5L left) that I'll be putting in the differential along with a fresh liter, 'cause I'm cheap and it doesn't appear that fluid type has a big effect on the way this Torsen operates.


I appreciate the suggestions! I hadn't considered leveling the car before the fluid swap but now that you mention it I probably should.

I tried Motul 300 gear on the first trans and diff oil change, and while I did notice a difference, it was more or less the same. I think the difference was more of a old vs new oil kind of thing rather. I tried Redline afterwards, the feeling is different. The notchiness and mechanical feeeling is less present, it feels a bit more vague or smooth, dont know how to put it. I liked it better with Redline so I stuck with that for now. 4 years of track usage and so far so good.

[allowe]

And here I was about to order some motul and change both tranny and diff for "better shift feel" as my 5th gear grinds a bit once a week while driving


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[bmacfrs]

Originally Posted by Icecreamtruk

I tried Motul 300 gear on the first trans and diff oil change, and while I did notice a difference, it was more or less the same. I think the difference was more of a old vs new oil kind of thing rather. I tried Redline afterwards, the feeling is different. The notchiness and mechanical feeeling is less present, it feels a bit more vague or smooth, dont know how to put it. I liked it better with Redline so I stuck with that for now. 4 years of track usage and so far so good.

Same experience as well. I drained out the motul and put in amsoil gl-4 in the tranny. Way better.


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[strat61caster]

Originally Posted by allowe

And here I was about to order some motul and change both tranny and diff for "better shift feel" as my 5th gear grinds a bit once a week while driving


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Like Church said, fill amount could be playing a factor as well. The nice thing about Motul is 4L covers your whole change and you'll have a bit leftover for next time, maybe enough to just buy 3L if you stick with the same fluid. I think it's worth trying and is certainly the 'safest' bet out there given how many people like it.

This stuff seems to be super hit and miss depending on use case and climate, there's no universal solution (which is why I'm trying something different, maybe it's better, maybe it's worse, idk, to reiterate I don't consider anything 'wrong' with the way my car shifts with OE or Motul, just that it could be better).