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Reg. Oil or Synthetic

Just a note, if you have a ride that is very old i.e. 70's or earlier, the question of whether you will develop leaks due to the use of rubber seals and the like may be valid, as Fossil says,.

But never rely on "varnish and sludge" to keep liquids inside. Probably the same person who invented that also says never change your oil, there is enough blowby and burning that simple refill at the proper level should last a lifetime...same thing as the toilet paper bypass oil filter design, "--did I use Scott single ply or Charm'in double ply...?:bigsmiley22:

A fair amount of bikes may be old vintage on the outside, but have modified internals w/ modern seals made out of neoprene or other plastic based materials that are much more resilient and tolerate modern oil additives, in the event they are rebuilt with modern components. So that one size fits all approach does not necessarily apply. Only way to be sure is to learn from HDT forums like this, from posters with similar situations and experiences like you. Learning and knowledge is power... :D
 
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Bought a 2001 Night Train a couple weeks ago and put Harley oil into it. I have used Mobil 1 in everything I own and will be switching to that. Just wasn't sure before if it was a good idea for this bike.
Where does one find Mobil 1 V Twin oil?
Fossil: Haven't had any problem with my Sporty when I changed to Mobil 1 but have had experience with a Ford Escort I bought new in 91. Never leaked at all til I changed to Mobil 1 at 90K. Then it started to leak a bit but I got 248K out of it when I got rid of the thing. Engine still purred like a kitten but everything else was falling apart around it so had to go. It was explained to me that the reason they sometimes leak is because the oil is so good. Not sure if that's true but I'm a HUGE believer in Mobil 1. I'll put up with a little leakage.
 
I buy my mobil1 v-twin oil at........Wally world My local walmart also has the 4t 10w40 for the primary and even the mobil 1 gear oil for the tranny
 
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