Recent Topics
2003 Ford CVPI, 86kmi, 6kmi on Edge HM Ti 5W30
by Colt45ws. 12/18/18 12:35 PM
2017 Kia Sportage recall notice
by SlavaB. 12/18/18 12:26 PM
My VW Service Experience
by Delta. 12/18/18 11:36 AM
Nissan high idle, P0507
by LeakySeals. 12/18/18 11:23 AM
Should i go for even thinner fluid ?
by NICAT. 12/18/18 11:06 AM
Viscosity question
by dbierman. 12/18/18 10:50 AM
48 hours and a used car
by Imp4. 12/18/18 09:32 AM
Test driving PHEV w no battery charge
by RichardS. 12/18/18 09:02 AM
2005 Ford PSD with hard shifts when cold?
by racin4ds. 12/18/18 08:08 AM
18% off Ravenol + EVERYTHING @ Blauparts.com
by CleverUserName. 12/18/18 07:48 AM
Mattress shopping .....
by dblshock. 12/18/18 04:57 AM
AmazonBasics Oil May Drive Prices Down
by knerml. 12/18/18 04:45 AM
Hemi MDS issues are how common?
by Gasbuggy. 12/18/18 03:21 AM
Why use Redline and Redline Clone oils...
by burla. 12/17/18 11:38 PM
Tire choice
by CincyReds. 12/17/18 11:14 PM
Transmission fluid leak
by dawgn86. 12/17/18 07:53 PM
QuickJack BL-5000SLX and my Optima...
by WhizkidTN. 12/17/18 07:23 PM
Newest Members
MuhThugga, wxo, dbierman, keyblade, leeal
66716 Registered Users
Who's Online Now
105 registered members (97prizm, 87sammy, 28oz, 14Accent, 14 invisible), 1,947 guests, and 39 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics295,220
Posts4,930,279
Members66,716
Most Online2,553
Oct 27th, 2018
Donate to BITOG
Previous Thread
Next Thread
Print Thread
Hop To
Maxima MTL transmission oil-1973 Yamamaha RD350 #4562743
11/03/17 06:06 AM
11/03/17 06:06 AM
Joined: Nov 2017
Posts: 6
NB Canada
Alain2 Offline OP
Alain2  Offline OP
Joined: Nov 2017
Posts: 6
NB Canada
1973 Yamaha RD350 2 stroke engine. Yamaha recommends 10w30 motor oil for the gear case. Now most car oil 10w30 have additive the 70s oil didn't have.

Instead of a motorcycle specific 10w30 oil, what about using Maxima MTL transmission oil, it comes in 75w(XL), 80w(R) and 85w(E).

Which one would be the equivalent of the 10w30? 80W?

SAE Grade MTL-XL MTL-R MTL-E
SAE Viscosity 75wt 80wt 85wt
Color D1500 Honey Honey Honey
Viscosity cSt @ 40C D2270 31.63 63.45 89.29
Viscosity cSt @ 100C D2270 5.54 8.57 10.66
Viscosity Index D2270 125 125 135
Flash Point C D92 425 465 500
Pour Point C D92 -15 -12 -10

Re: Maxima MTL transmission oil-1973 Yamamaha RD350 [Re: Alain2] #4562807
11/03/17 07:51 AM
11/03/17 07:51 AM
Joined: Oct 2004
Posts: 3,186
Midwest, Illinois
beanoil Offline
beanoil  Offline
Joined: Oct 2004
Posts: 3,186
Midwest, Illinois
You could, MTL is fine for a 2t gearbox.
Ford F fluid is as well.
I ran a lot of Shockproof Light in the MX bikes, that's another option.


beanoil: Tough under heat, real dirty afterwards.
Re: Maxima MTL transmission oil-1973 Yamamaha RD350 [Re: beanoil] #4562814
11/03/17 08:03 AM
11/03/17 08:03 AM
Joined: Nov 2017
Posts: 6
NB Canada
Alain2 Offline OP
Alain2  Offline OP
Joined: Nov 2017
Posts: 6
NB Canada
I know it is fine, but I was curious to know the WT equivalent of 10w30.


Ford F fluid is interesting, I think the Yamaha Banshee crowd uses that. That being said, I would use Castrol GTX 10w40 before Ford transmission oil!

Re: Maxima MTL transmission oil-1973 Yamamaha RD350 [Re: Alain2] #4562835
11/03/17 08:50 AM
11/03/17 08:50 AM
Joined: Aug 2004
Posts: 4,821
Katy, Republic of Texas
blupupher Offline
blupupher  Offline
Joined: Aug 2004
Posts: 4,821
Katy, Republic of Texas
according to this chart, a 30 wt oil is equal to a thick 80 to 85 wt gear oil.

Last edited by wwillson; 11/03/17 06:30 PM. Reason: fix URL
Re: Maxima MTL transmission oil-1973 Yamamaha RD350 [Re: blupupher] #4562883
11/03/17 09:52 AM
11/03/17 09:52 AM
Joined: Nov 2017
Posts: 6
NB Canada
Alain2 Offline OP
Alain2  Offline OP
Joined: Nov 2017
Posts: 6
NB Canada
perfect, thank you for the link

Re: Maxima MTL transmission oil-1973 Yamamaha RD350 [Re: Alain2] #4563217
11/03/17 04:59 PM
11/03/17 04:59 PM
Joined: Jul 2003
Posts: 4,901
New Zealand
Silk Offline
Silk  Offline
Joined: Jul 2003
Posts: 4,901
New Zealand
A straight 30 would also be pretty close.


1987 BMW R65 - Aegis SAE30
2005 Nissan Expert - Gulf Western 10W-40
1996 Volvo T5 - Penrite HPR15 - 15W-60. Ryco syntec filter.
Re: Maxima MTL transmission oil-1973 Yamamaha RD350 [Re: Alain2] #4563269
11/03/17 05:57 PM
11/03/17 05:57 PM
Joined: May 2005
Posts: 166
near Montreal, Canada
mlatour Offline
mlatour  Offline
Joined: May 2005
Posts: 166
near Montreal, Canada
Motul makes a 10W-30 gearbox / wet clutch safe lubricant,
Transoil 2T looks to be a mineral and is mostly marketed for dirt bikes.

They also offer a synthetic, Transoil Expert 10W-40.

Myself have tried every imaginable lubricant in my YZ125 motocross gearbox,
from thin Type-F to thicker Rotella T 15W-40 and everything in between.

Have now settled on Motomaster 10W-30 Semi-Synthetic Diesel engine oil (likely Rotella T5 re-badged),
not JASO rated but has not shown any signs of slippage in 3 dirt bikes I run it in.

In all that I've ran, it's actually the oil that retains the best shifting qualities the longest.

Last edited by mlatour; 11/03/17 06:02 PM.
Re: Maxima MTL transmission oil-1973 Yamamaha RD350 [Re: Alain2] #4563480
11/03/17 09:55 PM
11/03/17 09:55 PM
Joined: Sep 2015
Posts: 6,090
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 6,090
Kalifornia Kollective
Redline MTL (manual transmission Lube) will give you a whole new feel. Shift quick and slick. I pour it all the manual gearboxes (except heavy trucks - cost ...) cause it works so well smile


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

BOB IS THE OIL GUY® Powered by UBB.threads™