GEARBOX OIL

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TwostrokeStu
Posts: 10
Joined: Tue Apr 19, 2016 6:24 pm

GEARBOX OIL

Postby TwostrokeStu » Wed Dec 27, 2017 9:05 pm

What is the best grade and make of gearbox oil for my GT750

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PaulD738
Posts: 2260
Joined: Thu Sep 25, 2014 6:57 pm
Location: Warrington Cheshire

Re: GEARBOX OIL

Postby PaulD738 » Wed Dec 27, 2017 9:27 pm

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.
There 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 8-)
1981 GSX1100 Katana Pussy Galore (the blunderbuss)
1973 T500K Dobbin (the rapier)
Seeley T500 race bike

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mizzytheman
Posts: 1520
Joined: Tue Dec 28, 2010 1:17 pm
Location: Knowsley, Liverpool

Re: GEARBOX OIL

Postby mizzytheman » Wed Dec 27, 2017 11:22 pm

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.

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Alan H
Posts: 7589
Joined: Fri Aug 05, 2011 6:38 am
Location: Wombwell, Republic of South Yorkshire

Re: GEARBOX OIL

Postby Alan H » Wed Dec 27, 2017 11:25 pm

Don't use the full sympathetic stuff in a 70s bike, they don't like it. :shock:
Proof that four strokes are over complicated

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Roger Ackery
Posts: 3090
Joined: Wed Jul 20, 2011 3:40 am
Location: Sydney NSW Australia

Re: GEARBOX OIL

Postby Roger Ackery » Thu Dec 28, 2017 7:37 am

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.

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Harrymail
Posts: 234
Joined: Thu Jul 07, 2016 8:35 pm
Location: Hedon, East Yorkshire

Re: GEARBOX OIL

Postby Harrymail » Thu Dec 28, 2017 10:59 am

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.
1977 GT550A Black

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2strokejohnny
Posts: 987
Joined: Sun Nov 08, 2009 7:20 am
Location: Bed/Cambs border

Re: GEARBOX OIL

Postby 2strokejohnny » Sat Dec 30, 2017 7:32 am

10w 40 mineral for me and change every spring even though it looks new,2sj
Suzuki GT750B
Suzuki GT380M
Triumph T100 Unit Bonny


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