cusimar9

After having my S2k for a couple of weeks I've decided the transmission is not as silky smooth as it probably should be. I guess being an '04 on 46k it's never been changed.

I had a bad experience in an old car using Fuchs transmission oil, it became notchy as hell and I went back to standard.

What do people recommend on here? I've been looking on Opie Oils: http://www.opieoils.co.uk/c-670-75w-...ion-fluid.aspx

What's the deal with the diff oil?

Looking at the FAQ I need:
Diff Oil 75W90 GL-5
Gearbox Oil 75W/80 GL-4

MB

Motul Gear 300 for the box
Motul PA90 for the diff

cusimar9

This one? http://www.opieoils.co.uk/p-899-motu...ter-based.aspx That's 75W/90, is that OK? Is it a smoother shift than the OEM fluid?

MB

That's what i've used on all my S2000 and works well for me.

You might want to hang on until Si2k comes along, our resident oil expert.

Am talking to Si about a swap to Castrol for the box and diff, for some brand loyalty!

NineBolts

I used Motul Gear 300 which made mine (25K mile) feel notchy. I switched back to Honda MTF at the next service, which makes it feel much smoother.

sound_wave

I agree with Ninebolts. I used the motul and the feel was poor. Went back to Honda MTF and not looked back since.

Tegiwa Imports

Honda MTF is what you should use and it's what Honda use.

AlexGJ248

Just done a service on mine and used Honda MTF-3 transmission fluid.

Scottland

Ditto, Honda MTF3 for me. Read around a bit beforehand and seemed the best option

Kitesurfer s2000

Redline MTL fully synthetic 70w80 gearbox oil GL4 made by box feel like butter.