GEARBOX OIL
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- Posts: 16
- Joined: Tue Apr 19, 2016 6:24 pm
GEARBOX OIL
What is the best grade and make of gearbox oil for my GT750
- PaulD738
- Posts: 3963
- Joined: Thu Sep 25, 2014 6:57 pm
- Location: Warrington Cheshire
Re: GEARBOX OIL
I use Millers classic 20/50 in mine with no problems. DO NOT use modern synthetic oils or you may well end up with clutch slip/drag problems.
They're rubbish them Jap bikes lad they won't last five minutes! you want to get yourself a nice Royal Enfield!
A quote from my old dad
I started out with nothing and I’ve got most of it left!
A quote from my old dad
I started out with nothing and I’ve got most of it left!
- mizzytheman
- Posts: 2227
- Joined: Tue Dec 28, 2010 1:17 pm
- Location: Knowsley, Liverpool
Re: GEARBOX OIL
You’re ok to use modern synthetic oil as long as it says JASO MA on the can. Suzuki did recommend 20W 50 oil but I know some members will be using 20W 40 or even 10W 40.
Stick with the recommended and you’ll be fine.
Stick with the recommended and you’ll be fine.
- Alan H
- Posts: 12116
- Joined: Fri Aug 05, 2011 6:38 am
- Location: Wombwell, Republic of South Yorkshire
Re: GEARBOX OIL
Don't use the full sympathetic stuff in a 70s bike, they don't like it.
Proof that four strokes are over complicated
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- Posts: 3693
- Joined: Wed Jul 20, 2011 3:40 am
- Location: Sydney NSW Australia
Re: GEARBOX OIL
Hi, Castrol and Motul both do a gearbox oil designed for two stroke motorcycles, I have used both for many years & found them to be very good, nice smooth gear changes, no clutch drag when cold, no clutch slipping, I do change the oil regularly around 5,000kms
Cheers.
Roger
GT750A.
Roger
GT750A.
- Harrymail
- Posts: 639
- Joined: Thu Jul 07, 2016 8:35 pm
- Location: East Yorkshire
Re: GEARBOX OIL
I like the Motul mineral oil. Its specifically made for two strokes with wet clutches. It's a 10w 30 so a bit thinner than 20w 50. Good when cold, no clutch drag. I change every year, though it still looks new when changed. I order online from M&P or Busters, free delivery if bought via their eBay outlet.
Currently without a GT, but looking
2003 Yamaha Fazer 600 Blue
2020 Triumph Street Twin Red
1968 BSA Bantam Sports Red
2003 Yamaha Fazer 600 Blue
2020 Triumph Street Twin Red
1968 BSA Bantam Sports Red
- 2strokejohnny
- Posts: 1362
- Joined: Sun Nov 08, 2009 7:20 am
- Location: Bed/Cambs border
Re: GEARBOX OIL
10w 40 mineral for me and change every spring even though it looks new,2sj
Suzuki GT750B
Suzuki GT750K
Triumph T100 Unit Bonny
Suzuki GT750K
Triumph T100 Unit Bonny