What is best oil to use in 1974 750 SF to avoid clutch issues is ????

I had high RPM 3rd-gear slippage in my 3C clutch, which had sat 25 years. Yeah, I should have taken it apart and cleaned it, but I was lazy. For the first 150 miles, I ran Shell 15W40 Rotella as it is cheap, and has been fine in my other wet-clutch bikes. I recently drained it and put in Liqui Moly 20W50 mineral oil, and it's not slipping or puffing smoke on decel (valve oil seals, which I'm sure I should change out). Bike seems to like it, whether it's the best or not is beyond my pay grade.
 
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Just make sure you don't use V twin oil or the motor will explode. Oil made for 180 degree twins is just as bad. Make sure on the oil bottle it says for 360 degree twins only. Also avoid racing oil as it will make the bike go too fast!

Now your 750 is 52 years old and probably has the original clutch. Take it apart and inspect it. Changing to a different oil will probably not help.
 
Saddled a Laverda 750 SF0 for 45 years. Runs Great on any Trucker's 15w40 DINO Oil such as Shell, Delvac, Rotella ... etc . DO NOT use a Synthetic or a Teflon additive or you will cause Clutch to Slip and you will have to Clean, Bake and Scuff the disks ;o)

The original owners manual called for straight Shell SAE 30 but a Trucker's 15w40 DINO Oil is perfect - There's no need to spend more for exotic expensive racing oils period.when you should replace the oil twice a season if you do any amount of riding on her. Keep that chain serviced as well - Happy riding your 750 SF.

PS: Drill and tap the oil filter plate for a Magnetic Drain Plug ;o)
 
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Penrith used to do a Minral based V twin MC5 20w50 for air cooled Ducatis a and one for non V twins, plus the same in semi synthetic and full synthetic with those more expensive than the mineral ones. Made me fell special using it in the Pantah. Smart marketing.
 
I am doing this for a giggle; it's kind of funny. I did some googling, and apparently they dont do that V-twin oil in Mineral anymore, only there top rated full Syinthetic. So they have both V-twin and other engine configurations in separate bottles; you can use either if you want, but in full synthetic only. Good old Penrite lists Laverda in their tech specs.
www.carthyscarcare.com.au

Penrite MC-4ST V Twin 20W-504L

Penrite MC-4ST V TWIN is a superior performance, premium 100% PAO & Ester, synthetic, SAE 20W-50, non-friction modified 4-stroke engine oil. It contains a superior anti wear package of *FULL ZINC + (exceeding 1800+ ppm levels) for ultimate engine, gearbox & clutch protection against wear...
www.carthyscarcare.com.au www.carthyscarcare.com.au
 
Reunited Chris said:
What is wrong with V- Twin oil ? why can't it be used in bikes other than V-Twins?
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After years of heading Mobilexcom, here are the facts: V twin specific oil molecules are orientated to ‘slowly, yet smartly’ slide down the V twin bores.

Whereas: If used in a parallel twins, or triples, the molecule positioning makes the oil slide down the bores before the rings even get a chance to wipe it down, ultimately, the pistons are prone running dry in the near vertical cylinders

Anyone who knows anything about oil molecular makeups will be aware of the industry standard ‘variable multilinking’ and the ‘positive cross linking’ benefits of molecules for specific bore angulars.

Other, un-oileducated endusers, and head nodders of the pre-mentioned, can be considered what the oil industry call ‘gullible fucks’.
 
chrisk said:
After years of heading Mobilexcom, here are the facts: V twin specific oil molecules are orientated to ‘slowly, yet smartly’ slide down the V twin bores.

Whereas: If used in a parallel twins, or triples, the molecule positioning makes the oil slide down the bores before the rings even get a chance to wipe it down, ultimately, the pistons are prone running dry in the near vertical cylinders

Anyone who knows anything about oil molecular makeups will be aware of the industry standard ‘variable multilinking’ and the ‘positive cross linking’ benefits of molecules for specific bore angulars.

Other, un-oileducated endusers, and head nodders of the pre-mentioned, can be considered what the oil industry call ‘gullible fucks’.
Click to expand...
So my triples use V-twin oil but only run on 2 cylinders, where can I get 3 cylinder oil from? 4 cylinder oils spew out of the oil breather.
 
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