The guy keeps telling me its a harley. he could be wrong. I was thinking tho that harleys did do that some years ago but I could be wrong I don't know that much about them. What years did the triumphs do that then?
I can only speak for the pre Evo Harleys but Harley has Never used the frame for oil in production bikes. Harley uses a seperate oil tank or one half of the left hand gas tank on some early models and most 45's. If the frame your looking at looks like this, it's a late 60's early 70's Triumph 650/750 frame. I hope this helps. Good Luck.