What kind of transmission oil and brake fluid do you recommend?

yamaha189
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yamaha189
Edited Date/Time 1/27/2012 12:50pm
2004 yz 125. Just getting stuff to freshen up the bike over winter and was curious too see what all of you used or thought worked best.
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xnationalwrench 1/3/2012 6:02pm
1/3/2012 6:02pm
I have used either Bel Ray or Golden Spectro with good sucess.
CamP
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CamP 1/3/2012 6:10pm
1/3/2012 6:10pm
Because of clutch contamination, a 125's tranny oil should be replaced often, so there is no need for expensive oils. The best inexpensive tranny oil is Rotella 15w40.

125's are also pretty easy on brake fluid so any generic Dot 4 should be fine.
yamaha189
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yamaha189 1/3/2012 6:26pm
1/3/2012 6:26pm
CamP wrote:
Because of clutch contamination, a 125's tranny oil should be replaced often, so there is no need for expensive oils. The best inexpensive tranny oil is...
Because of clutch contamination, a 125's tranny oil should be replaced often, so there is no need for expensive oils. The best inexpensive tranny oil is Rotella 15w40.

125's are also pretty easy on brake fluid so any generic Dot 4 should be fine.
thanks. thats what i'll use.
lumpy790
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lumpy790 1/4/2012 7:04am
1/4/2012 7:04am
Bel Ray 80 W gear saver. I use dot 5 in all my bikes brakes

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CNORRIS
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CNORRIS 1/4/2012 9:20pm
1/4/2012 9:20pm Edited Date/Time 1/4/2012 9:22pm
Really like the Castrol Actevo, it seems to hold up really well. Joe Gibbs has a oil that works very well too, just not as easy to grab it up.
mj731
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mj731 1/5/2012 5:59am
1/5/2012 5:59am
CamP wrote:
Because of clutch contamination, a 125's tranny oil should be replaced often, so there is no need for expensive oils. The best inexpensive tranny oil is...
Because of clutch contamination, a 125's tranny oil should be replaced often, so there is no need for expensive oils. The best inexpensive tranny oil is Rotella 15w40.

125's are also pretty easy on brake fluid so any generic Dot 4 should be fine.
x2
TerryK
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TerryK 1/5/2012 12:06pm
1/5/2012 12:06pm
Ive had nothing but good luck with BelRay Gear saver. The higher price is well worth the insurance.
lumpy790
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lumpy790 1/5/2012 1:12pm
1/5/2012 1:12pm
TerryK wrote:
Ive had nothing but good luck with BelRay Gear saver. The higher price is well worth the insurance.
not to mention how much smoother it shifts.
Falcon
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Falcon 1/5/2012 4:10pm
1/5/2012 4:10pm
lumpy790 wrote:
Bel Ray 80 W gear saver. I use dot 5 in all my bikes brakes
I'm sure you know this, but I'll clarify for everyone else:

Make sure to COMPLETELY flush your braking system if you ever switch over to DOT 5! DOT 5 is a silicone-based fluid, not glycol-based, like DOT 3 and DOT4. 5 is also more prone to water absorption, so you must change it much more often. The good news is that it can withstand much higher heat than the 3 or 4.

Riders looking for a higher-performance glycol fluid should look for DOT 5.1 - Castrol and Motul both have versions, I believe.
yamaha189
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yamaha189 1/5/2012 4:52pm
1/5/2012 4:52pm
thanks everyone for the advice. I went to my local shop today and got the Belray 80W oil and the Belray DOT4 fluid.
CamP
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CamP 1/5/2012 5:30pm
1/5/2012 5:30pm
yamaha189 wrote:
thanks everyone for the advice. I went to my local shop today and got the Belray 80W oil and the Belray DOT4 fluid.
That will work and I'm sure your local bike shop appreciates the business.
lumpy790
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lumpy790 1/6/2012 7:38am
1/6/2012 7:38am
yamaha189 wrote:
thanks everyone for the advice. I went to my local shop today and got the Belray 80W oil and the Belray DOT4 fluid.
CamP wrote:
That will work and I'm sure your local bike shop appreciates the business.
+100
lumpy790
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lumpy790 1/6/2012 7:40am
1/6/2012 7:40am
lumpy790 wrote:
Bel Ray 80 W gear saver. I use dot 5 in all my bikes brakes
Falcon wrote:
I'm sure you know this, but I'll clarify for everyone else: Make sure to COMPLETELY flush your braking system if you ever switch over to DOT...
I'm sure you know this, but I'll clarify for everyone else:

Make sure to COMPLETELY flush your braking system if you ever switch over to DOT 5! DOT 5 is a silicone-based fluid, not glycol-based, like DOT 3 and DOT4. 5 is also more prone to water absorption, so you must change it much more often. The good news is that it can withstand much higher heat than the 3 or 4.

Riders looking for a higher-performance glycol fluid should look for DOT 5.1 - Castrol and Motul both have versions, I believe.
agreed......it is Motule I am using. Just make sure you keep a bottle in with your other race day lubes...... at the track dot 4 is usually plentiful....dot 5 not so much.
ktm212
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ktm212 1/6/2012 7:49am
1/6/2012 7:49am
Rotella burns too dirty IMO, factories can use it because they rebuild the bikes every other race but for the average guy its not worth the internal damage, your better off running better oil and making your motor last longer.

I run Motul in all my bikes with great success, in my 250 2stroke I was running Transoil 10w30 and shifting was greatly improved and the 800 2T pre-mix never missed a beat, its hard to go wrong with Bel-Ray, Spectro, Maxima, Motorex, or any of the main brands.
CamP
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CamP 1/6/2012 8:08am
1/6/2012 8:08am
ktm212 wrote:
Rotella burns too dirty IMO, factories can use it because they rebuild the bikes every other race but for the average guy its not worth the...
Rotella burns too dirty IMO, factories can use it because they rebuild the bikes every other race but for the average guy its not worth the internal damage, your better off running better oil and making your motor last longer.

I run Motul in all my bikes with great success, in my 250 2stroke I was running Transoil 10w30 and shifting was greatly improved and the 800 2T pre-mix never missed a beat, its hard to go wrong with Bel-Ray, Spectro, Maxima, Motorex, or any of the main brands.
Rotella burns too dirty? Rotella is not a pre-mix oil, so if your engine is burning it, you have bigger problems.
2smokers
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2smokers 1/13/2012 6:05am
1/13/2012 6:05am
I have always used motul. Never had any problems.
RACESTHILAIRE 1/13/2012 6:40am
1/13/2012 6:40am
Motorex, Bel Ray, Maxima, Spectro...You can't really go wrong. Pick a good 80wt gear lube from one of those guys and you will be golden. I have used Maxima MTL a lot and have had great luck.

Some manufacturers actually recommend regular 10w40.
yamaha189
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yamaha189 1/14/2012 9:27am
1/14/2012 9:27am
I bought the Belray 80W gear saver and put that in it, also I use Golden Spectro for premix and that is great also.
mxb2
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mxb2 1/14/2012 11:31am
1/14/2012 11:31am
The owners manual and a service manual are very helpful also.

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