Mobil 1 V-Twin 20W50 Oil
#31
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Here are the Zinc (zinc dithiophosphate) values from my 3 used oil analysis (Blackstone Labs):
Approx. 5,000 miles Mobil 1 15W50 Ext. Perf. (gold cap) 1,159 ppm
(33,900 miles total miles)
5,100 miles Mobil 1 15W50 (gold) 1,387 ppm
(39,250 miles)
5,317 miles Mobil 1 Twin V 20W50 1,147 ppm
(44,563 miles)
For example, the Red Line 5W40 that I run in my Boxster S has Zinc levels in the used oil analysis of about 1,258 ppm (3 sample average on approx. 22,000 miles).
The MSDS Sheet from Mobil states a Zinc level in the virgin oil of <2.5%:
http://www.msds.exxonmobil.com/psims...mentFormat=RTF
So, it looks like the Twin V has a lower zinc level than the M1 Ext. Perf. (gold cap) 15W50.......but this oil is also discontinued my Mobil 1. Now they just have the normal M1 15W50 stuff.
Approx. 5,000 miles Mobil 1 15W50 Ext. Perf. (gold cap) 1,159 ppm
(33,900 miles total miles)
5,100 miles Mobil 1 15W50 (gold) 1,387 ppm
(39,250 miles)
5,317 miles Mobil 1 Twin V 20W50 1,147 ppm
(44,563 miles)
For example, the Red Line 5W40 that I run in my Boxster S has Zinc levels in the used oil analysis of about 1,258 ppm (3 sample average on approx. 22,000 miles).
The MSDS Sheet from Mobil states a Zinc level in the virgin oil of <2.5%:
http://www.msds.exxonmobil.com/psims...mentFormat=RTF
So, it looks like the Twin V has a lower zinc level than the M1 Ext. Perf. (gold cap) 15W50.......but this oil is also discontinued my Mobil 1. Now they just have the normal M1 15W50 stuff.
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The 3rd test was done on my current fill with Mobil 1 Twin 1 20W50.
#33
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So I'm sure this won't help at all, but I called tech help at Esso (1-800-268-3183) and he indicated the
M1 15w - 50 has 1,200 ppm ZDDP and the M1 V Twin 20w - 50 has 1,600 however, he said that the motorcycle oil was not api rated for cars and they did not recommend it even for air cooled engines. I didn't really understand the reason other than it just has not been tested for autos. I wonder about a blend of the two!?
M1 15w - 50 has 1,200 ppm ZDDP and the M1 V Twin 20w - 50 has 1,600 however, he said that the motorcycle oil was not api rated for cars and they did not recommend it even for air cooled engines. I didn't really understand the reason other than it just has not been tested for autos. I wonder about a blend of the two!?
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Ronnie, your tech at Esso is not up to date with what the Mobil techs are putting into print!
The most important difference between a motorcycle formulation and an automotive formulation is that the automotive oils contain friction modifiers for improved fuel economy. Frankly, you are using 50 grade oil, you are probably not looking for fuel economy. So as you can see using the motorcycle oil in your vehicle is not an issue. Comparing the two oils, the main point of differentiation, beyond the motorcycle needs, is the level of ZDDP antiwear additive. Either product offers a robust level of antiwear with 15W-50 @ 1200 ppm phosphorus compared to the 20W-50 @ 1600 ppm
Another answer> please note that this reply means that 20W50 has special additives to prevent viscocity breakdown
Motorcycle oils and passenger car oils are very similar, with the exception of a couple of areas that are key to motorcycle operation. The first area concerns common sumps, or the use of motor oil, to lubricate and cool the transmission. As you know, in a passenger car the transmission is lubricated by an ATF fluid, which has frictional properties required for transmission operation. In a motorcycle, where the transmission may be lubricated by the engine oil, an engine oil that does not have the same level of friction modification (for fuel economy) of a typical passenger car engine oil will provide better transmission performance in terms of transmission lock-up and slippage. So motorcycle engine oil does not contain the friction modifiers of a passenger car engine oil. The second area of concern for motorcycle engine oils is that they tend to shear (breakdown viscosity) more quickly than a typical passenger car. Mobil 1 motorcycle oils are designed to provide exceptional protection against viscosity loss.
The most important difference between a motorcycle formulation and an automotive formulation is that the automotive oils contain friction modifiers for improved fuel economy. Frankly, you are using 50 grade oil, you are probably not looking for fuel economy. So as you can see using the motorcycle oil in your vehicle is not an issue. Comparing the two oils, the main point of differentiation, beyond the motorcycle needs, is the level of ZDDP antiwear additive. Either product offers a robust level of antiwear with 15W-50 @ 1200 ppm phosphorus compared to the 20W-50 @ 1600 ppm
Another answer> please note that this reply means that 20W50 has special additives to prevent viscocity breakdown
Motorcycle oils and passenger car oils are very similar, with the exception of a couple of areas that are key to motorcycle operation. The first area concerns common sumps, or the use of motor oil, to lubricate and cool the transmission. As you know, in a passenger car the transmission is lubricated by an ATF fluid, which has frictional properties required for transmission operation. In a motorcycle, where the transmission may be lubricated by the engine oil, an engine oil that does not have the same level of friction modification (for fuel economy) of a typical passenger car engine oil will provide better transmission performance in terms of transmission lock-up and slippage. So motorcycle engine oil does not contain the friction modifiers of a passenger car engine oil. The second area of concern for motorcycle engine oils is that they tend to shear (breakdown viscosity) more quickly than a typical passenger car. Mobil 1 motorcycle oils are designed to provide exceptional protection against viscosity loss.
#35
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Thanks Kevin. I think I'm understanding this better now. So bottom line, the motorcycle oil will be a bit better for valve guide wear, etc., particularly in track applications but not as good for mileage? Regarding mileage - if I cared I certainly wouldn't own a 993tt! Ronnie.
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I just wanted to update this post again. I received my 4th Blackstone Lab used oil analysis this week, and the report was excellent. My wear metals continue to decrease and improve. This was after my 3rd oil change with the Mobil 1 V-Twin 20W50. 5,000 mile intervals. About 12 months involved. All wear metals below universal averages. Zinc and Phos. levels excellent.
If anyone wants to see the full report, send me a PM with you e-mail address.
Thanks again, Kevin, for the sound advice.
If anyone wants to see the full report, send me a PM with you e-mail address.
Thanks again, Kevin, for the sound advice.
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