10W40 mineral oil good quality will do the trick. in the UK.
The 10 means the lowest optimum temp, W means winter, and 40 is the highest optimum temperature so if you live in a hot country then use a higher temperature oil and like wise for the winter.
More important is to use a good quality 2 stroke MOTORCYCLE oil as on 2 strokes this is the area that can go wrong. _________________ Honda nc23 CBR400 AERO 1986, 1990 honda NC23 Tri-Arm, 1987VFR400 NC24 Rothmans Rep, NSR250 MC16 1987, CL250s 1983. Moto guzzi zigolo 110cc 1958. Fantic 50cc 1972. Suzuki Cobra Race bike 500cc 2t 1975 , GP125 1975. Triumph T110 1954. BSA Thunderbird 1955. Ariel VB 600 1952, 1990 MuZ 125 etz.
I run Honda HP 80/85W trans oil in my NSR and TZ. Only use the clutch to start the bikes and take off and get great wear out of the gearbox. _________________ 1995 A kit TZ 250
1994 Rothmans NSR 300sp SOLD
1998 RM 250 freestyle/motorcross
1998 Meathanol burning CR 500 AF super retard/motorcross/sand dunes/play bike
alannsr250 wrote:10W40 mineral oil good quality will do the trick. in the UK.
The 10 means the lowest optimum temp, W means winter, and 40 is the highest optimum temperature so if you live in a hot country then use a higher temperature oil and like wise for the winter.
More important is to use a good quality 2 stroke MOTORCYCLE oil as on 2 strokes this is the area that can go wrong.
I think you need to read up alittle more about oils _________________ If I have to take the carbs off once more...
alannsr250 wrote:The 10 means the lowest optimum temp, W means winter, and 40 is the highest optimum temperature so if you live in a hot country then use a higher temperature oil and like wise for the winter.
Really? And there was me thinking that the number preceeding the W refered to the oils kinematic viscosity at 40*c, and the number proceeding refered to it at 100*c.
If anyone here can actually explain how the measurement of viscosity actually works and what the units are then please do.
Andy wrote:Eek! Does that mean next time I'm out and the temp drops below 10 degrees I have to walk home?!
Yes mate, but I'll leave you to wonder whether it's 10 degrees fahrenheit, celsius, kelvin or whatever. _________________ Please do not PM me technical questions, if you can't find it on the Forum start a thread
In that case (a) it would be appreciated if you would update your profile as that tends to generate more advice based on location, and (b) I recommend Rockoil GRO fully synthetic transmission oil.
That's only in a dry clutch transmission though. _________________ Andy.
NSR-WORLD.COM
Please keep all responses to Forum posts on the Forum so that others may benefit.
Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.
I use 10W40, neither gearbox has died yet, proper Honda spec will be something like 80w gear oil (that is NOT oil that you use when the ambient temperature is 80 degrees in winter either). _________________ Please do not PM me technical questions, if you can't find it on the Forum start a thread
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