[resonantfreq]

I'm sure this has been asked before but what kind of oil would you guys recommend for an '85 750?

 

[Mr Gixxer]

in my 88 1100 i am running Motul 20w50 semi synthetic

 

[Edster]

I'm runnin' redline 10w40. works great!
I have run mobil 1 10w40, honda hp4 10w40, spectro 10w40, golden spectro 10w40 and they all work good. I would stick to 10w40 unless your bike runs hot or your driving around in the summer in stop and go traffic.

 

[doug]

modil 1 15-50 synth car oil last 2 years crappy tire or walmart

 

[bcjohn]

Same as Doug, Mobil 1 15-50.

 

[resonantfreq]

I'm guessing you guys run thicker oil for more protection? Do you notice any difference in how the engine runs with the thicker oil?

 

[**DONOTDELETE**]

if the bike has always run synthetic go with mobil 1 15-50(some good shit). if the bike was raised on dino juice, so to speak, and has a good bit of mileage, stick with a good sg rated mineral oil.

 

[mcgsxr]

I run Motul 5100.

 

[slngsht750]

I've always used Golden Spectro Semi-Synth with great results. Of course, if you change every 1500mi like I do, nearly any oil should work just fine. In my past experiences, full Synth's have given way to clutch slippage.

 

[twinner]

Specro synthetic 20/50

 

[Epsilon GSXR-750]

I'm use Castrol 20w50

I hear that some engine can't use oil synth because may damaged

 

[gsxr1198]

Synth oils are probably the best thing you can feed one of these oil-cooled engines... they're very stable over a wide range of temps and typically don't lose properties as quickly as the dino-base oils do.

The only "downside" to them is that they lubricate so well that some wet-clutch bikes can't handle them well- my Bandit1200, for instance... I'd definitely be running a synth oil (and probably will once I upgrade to a lockup clutch) but the clutch pack doesn't have enough torque capacity to hold the engine when synth is in the sump.

So yeah, there are cases where synth oils aren't a good choice- but it's more due to shortcomings of the bike than of the oil.

Ed

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