Oil Change

[Nobog]

I just got a RT125 for #2 daughter to start her MC riding on. What a neat motorcycle. No manual came with the bike. Whats the recommended oil and weight for this thing? thanks, Jim

[DAVID THOMPSON]

hello

oil filter is kand n 151 or same as bmw f650 or atk with rotax motor

tell your local parts guy marshall parts in cass city mich. has them

the oil is yamaha for 4 cycle engines
1quart bottle
ACC-Y4020-40

this is what i have used for 9000 miles

i am now using Rotella 15W-40
ar dave
oil change info if you need it from shop manual

[Nobog]

Thanks Dave

[biolator]

any malaysian user that can suggest which is the best brand for the engine oil... i just think where i can find the yamahalube as show's above.. anyone got some suggestion?

[DAVID THOMPSON]

engine oil = 1.2 L of sae 15-40 or 15-50 api sg/sh

for 4 cycle engines with wet or oiled clutches

yamaha honda kaw suz brands all ok

just dont get some thing to slick and burn up the clutch disks

ar dave

ps no slick 50 or other brands of super slick oils or additives

[Nobog]

Dave, did I read that right, 1.2 liters? seems awful small amount. I drained the TR 125 and thats about how much came out however and the dipstick said OK. Is that with or without filter? Thanks, Jim

[DAVID THOMPSON]

1.2L with filter change

[phlat65]

just stay away from any oil that claims to lower fuel econmy. I just read a 15 page research paper on oil for motorcycles, and Rotella 15W-40 is the best for motorcycles. made from the highest grade oil base, and only has 3% added parafins, and the viscosity addative package is designed for heavy shear loads (like trans gears), and will not break down nearly as quickly as car spec oil. any industrial spec (api c) 15w-40 is best for our engines. Rotella is marketed world wide. also the dello delvac 15w-40 is comparable.

I will try to find a link to this article, I read it on paper at a Volvo Technical class.

very interesting, almost all marketed "synthetic" oils are only 20-25% synthetic based, mostly Dino oil. only the redline, golden spectro, and 1 other are true 100% synthetic (POE) based oils.

they did some viscosity tests on oils, and after 750miles, a motorcycle engine can destroy the visco addatives, a 15-40 turned into 15-22!!

the industrial grade oils are designed to go 50,000 to 150,000 miles in deisel trucks! they will make it the 3-5K we need with no problems.

[DAVID THOMPSON]

hi
Rotella 15W-40 is what i use in the saxon tour
as the former owner also used it so i did not change brands
but when i did the 125 the yamaha oil was used as i did not know
about the Rotella 15W-40

[biolator]

Which one better for 125 SM? full synthetic oil? semi synthetic oil? or none synthetic oil... for a better performance and longer lifetime...

regards..

[DAVID THOMPSON]

shell or yamaha both good just depends on what you can
get in your area or country

and a update from Advance Auto Parts
Mr. Thompson,
Thanks for your e-mail.
The Rotella is
available at Advance Auto Parts stores.
Part numbers:
Qt-50012-12031,
Gal-50012-06021.
5 Gal- 50012-05203.
If the store should be out of
stock, they will glad to order it for you.
Thanks,
Jay
Customer Contact Center

[biolator]

how frequent we should change the oil filter? every time service or after a few service?

[DAVID THOMPSON]

owners manual says 6000km for oil and filter or in miles
3726 miles

i change mine about every 2000 miles or 3220km

this engine works hard be nice to it change the filter and oil
often

[jawzx]

Anyone tried the Amsoil "full synthetic"? Claims "safe for all wet clutches, specialy formulated for the high temperatures and high speeds of today's motorcycle engines" or some such marketing gibberish. Most tests and reviews seem favorable.

[DAVID THOMPSON]

i am now using Rotella 15W-40
in both bikes and all my cars