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Old November 3rd, 2015, 05:00 AM   #1
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Motorcycle oil vs car oil = save yer money

I recently changed my oil using some Mobil 1 synthetic car oil (just standard - not for worn engines etc). It's relatively cheap at about $9/quart(liter) and comes in the proper weights.

I recently read a post about car oils and possible damage to bike catalytics which puzzled me since cataytics are catalytics. Other concerns such as higher revs, transmissions etc prompted a brief google search that came up with this article on a ducati site:

Motorcycle Oils vs. Automotive Oils

The upshot is that there is no difference, and when directly asked, the "motorcycle" oil makers could come up with no definitive reply.

Apart from oils with special additives, I'm going with the lower priced car synthetic.
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Old November 3rd, 2015, 05:48 AM   #2
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Let us know if your clutch starts slipping. With Mobil 1 it may not.
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Old November 3rd, 2015, 06:08 AM   #3
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dragoontwo nailed it

motorbike oil has addons to prohibit clutsch slipping, as most bikes (beside older Ducatis which have dry clutch) have clutch in oilbath and no dry clutch like cars
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Old November 3rd, 2015, 07:08 AM   #4
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appliance - The test you have referenced was conducted somewhere between 1988 and 1993 because it references API SG rating. We are currently up to API SN. All oils have changed quite a bit since then.

Also, at ~$9/qt. you aren't too far away from AMSoil territory.

ferdi - I think what you mean to say is that car oriented oils have more friction modifiers where motorcycle oriented oils have none or very little.
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Old November 3rd, 2015, 07:43 AM   #5
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This thread is beating a dead horse. Any oil that meets JASO-MA certification is able to be used in the Hyperstrada. All bike oils meets this requirement, and some diesel oils do as well. Car oil does not.
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Old November 3rd, 2015, 08:14 AM   #6
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Quote:
Originally Posted by ferdi View Post
dragoontwo nailed it

motorbike oil has addons to prohibit clutsch slipping, as most bikes (beside older Ducatis which have dry clutch) have clutch in oilbath and no dry clutch like cars
It's been over 1000 miles of smiles.
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Old November 3rd, 2015, 08:27 AM   #7
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Quote:
Originally Posted by monocog007 View Post
This thread is beating a dead horse. Any oil that meets JASO-MA certification is able to be used in the Hyperstrada. All bike oils meets this requirement, and some diesel oils do as well. Car oil does not.
As long as you stay away from special "friction reducing/energy saver" oils it's all good.
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Old November 3rd, 2015, 03:56 PM   #8
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Ive used mobil ! car oil in my bikes for years with no ill affects. And at $26 for 5 qt at Walmart you can't beat it.
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Old November 3rd, 2015, 04:49 PM   #9
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That article was the most pathetic thing I've ever read!
I don't even know where to start debunking that much bullshit!
First viscosity retention was (like mentioned) an issue in the 70s, today's car oil has to be much better, but even then in his own test he compared 2 full synthetic car oils to how many synthetic motorcycle oils?? NONE!! The motorcycle oils were a petroleum and a petroleum-blend, one that is OEM for a Harley and one that's OEM for an ancient Magna.
Second our bikes use a wet clutch something car oil would never be expected to take into consideration when blending it's oils, it's takes a tone of friction modifiers and additives to consider a motorcycle oil needs to be a gear oil for transmission pressure additives for the crank bearings and still be thin enough to work in the roller bearings of the top end, what our oil goes through really boggles the mind when you think about it!
Third was something he mentioned at the end but didn't go into enough detail was the filtering he did after the oil was out of the bike and before going into his testing, large particulates, he mentions using centrifugal force for 10 min before testing and never mentions what was removed. I'd be willing to bet more would come from an automotive synthetic then a motorcycle synthetic. Why? Because the blend would be designed with a much smaller oil pump and much smaller passage ways. A large car motor can practically move a marble anywhere in the motor but your ducati simply can't.
I could go on but I think I've made my point, if you want to save $60 a year on oil and risk total failure likely of you're clutch or top end, that's up to you.
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Old November 3rd, 2015, 06:01 PM   #10
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Best of luck with your decision to use auto oil in a wet clutch engine.

Keep the bike in Urban mode to reduce tire wear too.
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