Yamaha TRX850 Enthusiasts Forum

Hi Guys
Need some advice - Manual says Synthetic, can you use Part Synthetic? If so what do you recommend.

Motul 5100 10/40 in the TRX. Started using Halfrauds semi in the TDM as it drinks oil. Its £23 for 5 literes against Motul at £30 for 4 litres.
I have used the motul in the TRX for about 6 years 25K miles.
Dave

Cheers for the advice Dave

Hein Gericke semi synth - £13 for 4 litres

Use it in all my bikes (except the 2T obviously!)

Right cheers - off to HG - thats a good price for 4 lts

Me too, once i use the 5 litres of Halfords in the TDM (which wont take long) does about .4litre in 300miles.
Dave

Second (or third) that advice above: I use a 'cheaper' semi-synth and change it a bit more regulary.

Synth can cause a bit of slip.

Semi synth 10W/40 Halfords too, even cheaper in my case as I have a trade card.
The TRX really doesn`t need nor require anything better as long as you change it before the recommended milage covered, I do mine at 3000 mls.
I know folk have found fully synthetic better in helping to cure oil usage but mines a good-un uses hardly any.

have used fully clutch slips bad with it so stuck to semi and change it every 1-2k on all my bikes along with the filter, the way i look at it is its a cheap option that can only give me less chance of spending lots on a big repair

Hi guys,

I've used 20w/50 fully synthetic, not cheap, but it's made a noticeable difference to engine noise, there was a definite 'clicking' before that has now gone!

No evidence of clutch slip either, which some have reported.

20W / 50 is a tad heavy for cold winter work, but if the bike`s only used in the UK`s `warmer` weather you`ll not have any issues.
10W / 40 gets around the motor easier at start up, I`ve seen it in print that more than 75% of engine wear occurs at start up, when tolerances are at their greatest and oil is finding it`s way through the galleries and drillings.

I'm now a confirmed 'fair weather' rider I've got to the stage in my life where I've done all the rain/snow/ice riding I'll ever need!

So Trixie only comes out to play on nice days, I've also used Activ8 oil additive - to help on cold starts! It does seem to do what it says on the bottle... I've used it in the car as well (a high mileage BMW)

Activ8? Yes, we`ve another member here who swears by it too, I might try it myself one of these days.

It does seem to work, and it's suitable for use on bikes with wet clutches!