Yeah....not sure about the lubricity factor or cooling effect....just a theory. Mobil-1 is fully synthetic, whereas Syn 3 is not. Syn 3 is part dino oil and part synthetic. Because it is a blended oil, I assume that it seperation could occur or at the very minumum have less lubricity than 100% synthetic oil would. Following the same logic....less capable of cooling than 100% synthetic. Again, only a theory but with my limited undertanding of the subject, it seemed reasonable to assume.

 

Bone stock Ultra? The K&N doesn't count?

 

are you sure you're not giving it too much throttle in too high a gear? you have to accelerate slower if it's pinging. higher quality fuel, etc. i have a friend and his bike is constantly pinging under acceleration, only because he's giving it too much throttle in too high a gear. do you see where i'm going with this thought? example, you're going uphill in sixth gear doing 65 or so, and give it more throttle, and sure it's gonna ping. time to gear down and let the motor work rather than making it hammer. i hope this makes sense for you.

 

Yes, that makes sense. I'm not lugging it, just tends to ping generally such as when leaving a stoplight. I used the hill as an example of working the motor to make it ping. Fortunately, the problem seems to be solved now.

 

my 09 does the same as yours. only thing i have done is slipons. not sure where to go with fixing it

 

What brand of gas are you using? Did you recently change brands?
I live in Fullerton, I can only use Chevron and 76 in my '03 Ultra with any reliability.
I have tried Shell, Mobile and some of the local corner independents and always end up with pinging after the bike gets hot.
The way you take off from a stop when the motor is hot could be an issue. You notice the ping if you slip the clutch and just gradually get up to speed or do you drop the clutch and give it a handful?
imho something has changed and it aint the oil that stopped the detonation.
AP

 

I use to run Harley oil in my 2005 Road King. It started pinging one summer so badly that the power dropped off drastically. Not good when passing a semi on the interstate. I took it to a dyno shop and no problems were found. But it still did it when I rode it. I needed to change the oil one day and didn't want to go to the Dealership. Went to an auto parts store and bought Valvoline 10W40 for 4cycle motorcycles and a Fram filter. It ran so good I almost didn't realize while riding it that the pinging had gone away. I still use the Valvoline oil and It has never pinged since. Might be a fluke but I am not changing back. The engine seems less encumbered too if that makes any sense.