Topped up with automotive oil, clutch slipping. | GTAMotorcycle.com

Topped up with automotive oil, clutch slipping.

DJM

DJM

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Finished installing the new driveshaft on my mate's Suzuki M50 and took it out for a boot. Clutch is slipping when you apply full power. I called him and asked if he changed the oil recently, said he topped up with some Mobil oil he had in garage for his Toyota, put about 3/4 of a liter in.

I'm guessing/hoping it's the anti-friction properties in that oil that's messing with the clutch surface, but what I don't know is if I just need to do an oil and filter change or has it done a permanent alteration to the clutch friction disks and they will need replacing? BTW there's 50 000Km on it, no idea how long a clutch is expected to last.
 
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Well do the obvious, put fresh oil in. Double check your work....adjust clutch point, make sure the pack is releasing all the way.
 
lol, what a dumbass. First off his clutch will be fine as soon as he gets that stuff out. Contrary to what buddy above me here is saying don't ride the thing at all, clutch plates aren't hard to replace, easily done yourself and parts are only a couple hundred bucks at most OEM but he should drain that oil ASAP and it should be fine.

I've had a slipping clutch in 4th/5th/6th due to dumb **** like having to ride home without a working clutch lever and just popping gears up and down or gear shifter bent backward etc...every time after a thousand km or so of normal riding the clutch plates have corrected themselves.
 
shubhanshuojha said:
Drive some km first. Oil need to propagate through the drive train. Even after that if u face problem change the oil and test run some distance again. Otherwise if you change clutch disk it will become more costly. All the best

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He probably added an energy conserving oil 5w-30
 
CafeRay said:
3/4 of a litre is quite a "top up".
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My bike only holds 0.6L so yeah, that would be more than all my oil would be the wrong stuff.

On a car I might call that much a top up but not a bike.
 
If that was Mobil oil for a late model Toyota, it's probably not only "energy conserving" but also quite likely a 5w20, certainly not what a bike engine needs. Change the oil and the filter (in order to drain more of the old oil out), put in something appropriate for the bike, make sure the clutch cable (if it has a cable) is adjusted properly. If problem goes away, great. If problem remains, replace clutch plates.
 
Drained and filled with Rotella T 15w40 and went for a boot. Still slipping. Clutch cable free-play is good. Guess it needs plates. Haven't done a clutch in decades. is it just the friction-pad plates that are changed or the metal ones as well? My mate is in the middle of a divorce so money is tight.
 
If the super lubes in the non motorbike oil did pollute the clutch plates, and it could be leftover oil on the plates, you could consider an engine flush before doing a clutch. Its a lot cheaper, it may or may not help.

There is a lot of differing opinions on engine flushes and most modern engine manufacturers (Honda) say its not required or advised, but they also say don't put the wrong oil in the vehicle.....
 
"BTW there's 50 000Km on it, no idea how long a clutch is expected to last."

At that kind of mileage likely its best to just replace it - I believe EBC makes a kit. They are reasonably priced and quite durable.

 
DJM said:
Drained and filled with Rotella T 15w40 and went for a boot. Still slipping. Clutch cable free-play is good. Guess it needs plates. Haven't done a clutch in decades. is it just the friction-pad plates that are changed or the metal ones as well? My mate is in the middle of a divorce so money is tight.
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The kits for my bike include friction plates and steels and it's only $100 USD for the whole kit. Probably more for a big torquey cruiser though.
 
You could also remove the plates, blast them down with brake clean and then soak them in the proper oil. It may fix the problem but you're 1/2 way to installing a new clutch at that point. 50,000km doesn't necessarily mean you need a clutch either. You'll see what kind of shape it's in when you remove the plates. If everything still looks good (no bluing on the steel and fibres within spec) I'd try the brake clean.
 
I would have divorced him too if he put car oil in a motorcycle....
DJM said:
Drained and filled with Rotella T 15w40 and went for a boot. Still slipping. Clutch cable free-play is good. Guess it needs plates. Haven't done a clutch in decades. is it just the friction-pad plates that are changed or the metal ones as well? My mate is in the middle of a divorce so money is tight.
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ZX600 said:
I would have divorced him too if he put car oil in a motorcycle....
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He didn't know, it's all that was lying around and he was trying to get out of the house away from her to come down and visit...
 
DJM said:
He didn't know, it's all that was lying around and he was trying to get out of the house away from her to come down and visit...
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so he's still stuck living with her?? That sucks balls...trying to divorce a woman but stuck being her roommate, probably not even getting any action anymore.
 
LoneRonin said:
so he's still stuck living with her?? That sucks balls...trying to divorce a woman but stuck being her roommate, probably not even getting any action anymore.
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I'd be more concerned about her getting action from someone else, lol. If they're getting divorced they probably haven't been getting any action together for quite awhile. Heck, lots of guys that aren't getting a divorce aren't getting any action from their spouse, lol.
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