ZDDP in oils

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I've been running Rotella T 15-40 in all my bikes because of the great reviews it gets but also because of the ZDDP additive in it that the EPA has mandated to be removed from most oils. Does Mobil 1 10w30 wt have ZDDP in it? I got some on sale and was thinking of putting it in my low mileage '79 Yamaha XS1100. I know it also gets rave reviews but I've never ran it in a bike before. What say you?
 
Im no bike expert , but I can tell you that Mobil 1 10w30 is a great oil however it does not have the zddp levels as a Diesel oil like Rotella 15w40. If you are looking for a Mobil oil with higher zddp levels, I would suggest Mobil 1 High Mileage 10w30 or Mobil 1 Turbo Diesel Truck 5w-40.
 
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Originally Posted By: Ruffrider
I've been running Rotella T 15-40 in all my bikes because of the great reviews it gets but also because of the ZDDP additive in it that the EPA has mandated to be removed from most oils. Does Mobil 1 10w30 wt have ZDDP in it? I got some on sale and was thinking of putting it in my low mileage '79 Yamaha XS1100. I know it also gets rave reviews but I've never ran it in a bike before. What say you?


I suspect someone fed you some serious misinformation. The EPA didn't mandate removing ZDDP from oils.

First, it was the API (American Petroleum Institute). The API represents industry, not the government.

Second, they simply wrote new standards (namely API SM and SN), which are not "mandates;" oil formulators only have to follow them if they want to claim that their oil meets the latest API specs, which not all of them do. There are PLENTY of oils that are labeled with older API specs (e.g. SL, SJ) or none at all.

Third, the API didn't call for removing ZDDP. They simply put a cap on the amount of ZDDP you can have -- again, IF AND ONLY IF you want your oil to meet API SM or SN. This was done because ZDDP in engine oil can actually make catalytic converters wear out faster, and newer additive technology was coming out that allowed a smaller amount of ZDDP to do a better job than before; car manufacturers therefore asked the API (again, this has nothing to do with the EPA) for lower ZDDP limits in order to help make catalytic converters last longer.

Hope that clears some stuff out.


For your bike, what does your owner's manual say about what kind of oil you should use? That might be a good starting point.
 
You don't want to run an energy conserving oil in your bike that has a wet clutch. That's pretty much any multigrade 30wt oil.

Stick to Rotella! 10w30 is way too thin for your aircooled 1100!
 
You wont have near the amount of ZDDP and any friction modifiers on that "energy/resource conserving" oil will bugger up a shared sump wet clutch. Now if ya had a dry clutch or separated sump and it was the proper viscosity you could use that oil, but that yamaha is not one of those bikes.


Stick with the rotella.
 
Thanks all for the welcome and replies. It's obvious that I'm a newbie searching to learn more. This is a great resource. I think I'll stick to the Rotella T for my MC's and put the M1 in my Ford Ranger.
 
The Mobil 1 10w30 typically tests around 600PPM ZDDP. Ideal is around 1200 PPM.

Go with Mobil 1 10W-40 Motorcycle oil. It's a very robust oil and contains proper levels of ZDDP.
 
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I think I'll stick to the Rotella T for my MC's and put the M1 in my Ford Ranger.
Good plan.

What happened with ZDDP is that the EPA or some other agency required the automakers to have catcons that lived for at least 100,000 miles. The phosphorus in ZDDP kills catcons. At first the automakers required oil with lowered ZDDP, then they found low cost ways to keep the ZDDP in the oil instead of getting into the exhaust (lower volatility oil, and yes, it is all really about costs.) All motor oil contains ZDDP. It is the cheapest antiwear and antioxidant they can use. Other products work as well but cost more.

Schaeffer's #707 20W-50 V-Twin motorcycle engine oil contains both moly and Shaeffer's proprietary friction modifier Penetro, and more than 1600 ppm zinc. AND #707 passes the JASO-MA wet clutch friction certification tests. So much for not using moly in motorcycle oil....
 
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