Synthetic two-cycle oil

[RidgeRunner]

Merc Premium Plus blend at $20/gal. reg price from a Merc dealer. Yamalube, v. -the act of having your sphincter lubed just prior to checkout at your local dealer. Ouch $38/gal. That would have me rethinking that stuff too capt. Pete.
I do know that Merc. Premium Plus and DFI oil mix without a hitch. Had to do it to get home once, everything worked out.

[captpete13]

In my towboat I run optimax oil exclusively. But I don't have to pay for it. I double checked the price of Yamalube at my marina. List price is $34. But even with my discount it can't beat the Penzoil. Plus with the Yamalube I have to use ring free or I will foul plugs over time. I was told by others that had the same problem that also switched to Penzoil and they never fouled a plug again. I figure with my old motor it's worth a shot.

[macojoe]

I have been using wally world oil for years!! Even now with a 2004 Yamaha HDPI, never a issue! If you are under warranty use what they say, but all bets off after warranty is gone!

[THEFERMANATOR]

Originally Posted by macojoe

I have been using wally world oil for years!! Even now with a 2004 Yamaha HDPI, never a issue! If you are under warranty use what they say, but all bets off after warranty is gone!

I would NOT use wally world oil in a HPDI unless you want to have a costly engine repair. HPDI engines have a MUCH different oil requirement, and improper oil is what lead to the majority of early FICHT failures as well as MANY optimax engine and compressor failures.