Can I use Synthetic car oil or Conventional oil for cars

[Old Geezer Richard]

  I'm curious about oils and their particular properties , I'm currently using Amsoil 20w - 50 on my Valk now  ....  I have a friend who uses Mobil 1 Synthetic for cars on his Valk I/S and swears by it with no problems at all , he says that there ain't no difference in m/c oil  or car oil     .....  Just curious is possible to use conventional car oils also , providing it doesn't have any friction reducers in the mix .....  I think this subject has been kicked around , but I'm having a Senior Moment    .....  Thanks the Geezer 

[Gavin_Sons]

i use mobil 1 15 50 i think it is. as long as it does not have the energy conserving label in the lower portion of the circle it will work

[Challenger]

as long as it does not have the energy conserving label in the lower portion of the circle it will work

+1

[MarkT]

i use mobil 1 15 50 i think it is. as long as it does not have the energy conserving label in the lower portion of the circle it will work

I have a quarter million miles on Mobil1 on Deerslayer and BluByU (1800 wing).  Mostly 15-50 but sometimes other grades when I couldn't find that.  No issues whatever.  I don't know if Mobil1 has any oil with "friction modifiers" but I do always scan the label making sure I don't buy it.

[tank_post142]

I used mobile 1 15-15 for over 430.000 miles now it's doing a great job of staining the sidewalk where i crashed! still changed it every 3,000 miles and now that the engine is broken open so I can see inside, it's clean as a whistle in there ! remember to look on the round label on the bottle if it says friction modifiers or some such, just put it back on the shelf to protect your clutch.

[BF]

I use a motorcycle tire.   

[Old Geezer Richard]

 Thank You All for all your Infinite Wisdom   ,  I have another Tourist Question   for the assembly , can I assume that Friction Modifiers are to be found in both Synthetic & Conventional oils or just in Conventional oils ??  While I'm picking up some fuel filters ,  while I'm there I'm gonna take a gander at the  oils they have on the shelf and check the wording on the labels .....  Hey BF glad hear you use a M/C Tire   nice ride  , I run a car tire and Love It    .....  Thanks the Geezer  

[PAVALKER]

The story goes......

Anything with friction modifiers is a no no.... 

Anything marked "Energy Conserving" on the back of the oil bottle is a no no  (having friction modifiers).

 

[Farther]

I have another Tourist Question  :can I assume that Friction Modifiers are to be found in both Synthetic & Conventional oils......

Correct, if the label on the back of conventional or synthetic says energy conserving then it should not go in the Valkyrie.

[R J]

I have used Mobil 1 Diesel oil in a situation where I couldn't find the other on my way to Alaska.

Run it up, to Fairbanks, brought it back home via Blythe, CA.   Was trying to find as much of Route 66 as I could find.    Had like 8,000 miles on that oil change.

It came out almost as clear as it went in.

I have enough cases of Mobil 1 without the modifiers on hand all I have to do is through 4 qts in the saddlebag or trunk compartment and head out.   MGM has had Mobil 1 oil since about 12,000 miles and right now he has 243,00 and some change on him.

[salty1]

Mobil 1 15W50 full synthetic! 
I''ve been buying it by the case (with 3 five quart containers) at Wally World for about $66 a pop in AZ.
I can't get the five quart jugs in WA so I haul a case there.