Is there any difference between mobil 1 reg oil and Mobil one V twin oil. The v twin oil label says four stroke motor cycle oil What does it matter Mobil one or Mobil one cycle oil

 

Yes there is a difference. The vtwin oil is formulated for air cooled engines. It is also similar to a diesel oil. Check the sf, cf ratings on each one. There you will find a difference.

 

Mobil 1 V twin is much more expensive. Thats the main difference.

The below stats show that the oils are essentially the same. Mobil 1 15/50 actually has higher specification than Mobil 1 V twin.

Mobil 1 V-Twin 20W-50:
API SG,SH,SJ/CF
JASO MA


Typical Properties

Mobil 1 V-Twin 20W-50
SAE Grade 20W-50
Viscosity, ASTM D 445
cSt @ 40ºC 130
cSt @ 100ºC 17.8
Viscosity Index, ASTM D 2270 150
Sulfated Ash, wt%, ASTM D 874 1.0
Pour Point, ºC, ASTM D 97 -51
Flash Point, ºC, ASTM D 92 270
Density @15 ºC kg/l, ASTM D 4052 0.897


Mobil 1 15W-50:
API SM/SL/SJ/CF X
ACEA A3/B3 X
A3/B4 X

Typical Properties
Mobil 1 15W-50 Value
Viscosity, ASTM D 445
cSt @ 40º C 124.1
cSt @ 100º C 18.0
Sulfated Ash, wt%, ASTM D 874 1.4
Phosphorous 0.1
Flash Point, ºC, ASTM D 92 229
Density @15º C kg/l, ASTM D 4052 0.86
Total Base Number (TBN) 11.9
MRV at -40ºC 12188
Viscosity Index 161
HTHS Viscosity, mPa•s @ 150ºC, ASTM D 4683 5.0

 

normal mobile 1 has a friction modifier in it. I used it once in a Jap bike and cause clutch slipping.

 

V twin dosn't have friction modifiers added which can affect clutch performance

 

I've using 15W 50 in the crankcase for 17,000 miles with no issues. The v-twin is formulated for bikes that use common oil (same reservoir) for crankcase, primary, and tranny. HD uses separate oil for all 3. I wouldn't use it for the primary for the reasons in the post above. I wouldn't use any synthetic in the primary (waste of money). Just my 2 cents. Do what makes you feel comfortable.

 

Everything I've read says regular Mobil 1 is fine for the motor. Have seen lab tests that say it's fine. Not recommended for primary tho.
Some Walmarts have 5 qt. jugs for $21.

 

I agree. I use 15W-50 in the crank and use Castrol GTX10-40 Dino in the primary. Using a synthetic in the primary is simply a waste of money.

 

there is not enough difference in the additives to pay the extra cost. I had 69K on my 01 RK when i traded it on my 09. 15W50 went into it at the first change at 500 miles.
i had it apart at 54K for gear drive cams everything looked new. my 09 got it at 500 miles too. i ran synthetic ATF in my 01 from new and am doing the same in my 09. ATF is formulated for clutches (obviously).

 

Yup - about $5 / qt!!!

Other then that - it's a dark science that we layman wouldn't understand.
And frankly marketing has as much to do with it as true science.
I've read quite a few tests over the years, and question the real world viability of most of them. You always have to question who paid for the tests.
If there really was a "best" oil (other then SAE ratings) I think we'd have a definitive answer!

That said - I've been running Mobil 1 V-twin for 40K miles in my engine!

You rarely hear of oil related failures these day's, so why do we fall for the hype??