OSSA Forum

OSSA Motorcycles => TR280i => Topic started by: Bendyguy on January 10, 2014, 04:23:50 AM

Title: Transmission Fluid
Post by: Bendyguy on January 10, 2014, 04:23:50 AM
I've noticed a lot of discussion regarding tranny fluids.  I can share what I've learned thus far: 1. Correct capacity is 450cc per Adrian at Lewisport. 2. The drain bolt under the shifter does not drain the whole gear case, I also remove the 7 o'clock bolt from the clutch cover - it's a small bolt and it takes a while but does drain out.  It obviously helps if the bike is warm.  3. I've tried Amsoil 75w-90 gear oil, Redline type F ATF and Maxima 0w-10 in the gear box with the ATF giving the best clutch "bite" and the least clutch drag but it must be changed often.  The Maxima is a close second place and seems to last longer between changes.  4.  This bike rips!!!
Title: Re: Transmission Fluid
Post by: BigBadDon on January 10, 2014, 05:52:21 AM
Cool - thanks BG
Title: Re: Transmission Fluid
Post by: Nechako on January 18, 2014, 01:33:37 AM
I'm happy with the PJ1 Clutch Tuner Ultralight oil I've been using.
Title: Re: Transmission Fluid
Post by: trialsage on September 22, 2014, 08:38:09 AM
Maxima 0/10w is all we use in the ossa...450cc
Title: Re: Transmission Fluid
Post by: craigcorolla on February 18, 2016, 08:17:14 AM
Hi Just bitten the bullet and bought myself a 2014 TR300i (not ridden yet)

Want to give it a service etc. first.

Oil ive ordered for the transmission is......Fully Synthetic Millers EE 75w90 Nanodrive .

               Will the above be OK to try ?????

               Cheers, Craig.
Title: Re: Transmission Fluid
Post by: Lotus54 on February 22, 2016, 05:45:13 AM
I've only used the full synth maxima that Adrian mentioned.

270 hours and going strong.
Title: Re: Transmission Fluid
Post by: Murray on November 08, 2017, 06:56:34 AM
Oil ive ordered for the transmission is......Fully Synthetic Millers EE 75w90 Nanodrive .

               Will the above be OK to try ?????

               Cheers, Craig.

I have some of that oil too, was it ok to use?
Title: Re: Transmission Fluid
Post by: Lotus54 on November 18, 2017, 09:50:03 PM
Be aware the oil also lubricates the main bearing.  Most 2-strokes do not do this, although I heard some other trials engines do.

 I have almost 400 hours on my Explorer.  Finally going to pull the head/cylinder and see how the piston is doing. lat I checked (head only) cylinder looked like new and what I could see of piston through exhaust looked really good.