at the first service my dealer put in syn which I asked for. on the 3rd oil change the dealer used dyno by mistake. Now I am ready to have it serviced again and want to return to syn. is there a problem going back and forth like this?

 

no problem

 

Nothing to worry about. Cant believe the dealer made that mistake. Most of the time its the other way around, you ask for dino and they put in Syn 3 by "accident" and then want to charge you for more.

 

Negative...no problems & recommend you go w/anything other than HD oil. Most prefer M1, Amsoil, RedLine, Spectro...your choice. Supply to dealership & they'll deduct fm service bill.

Question, why not change your own oil? Not hard at all (oil, filter, tools & time). This way you know it's correct & done right...

 

A big AMEN to that notion. There's something sacred about doing my own oil changes, and I wouldn't sleep at night thinking about what they did or didn't do. Did they use a funnel that was inhabited by a roach family the night before and they slept-in that day? Are there roach parts floating around in my oil ready to clog-up my filter? Did they put the right oil in? (A good question considering the OP's experience.) Was primary oil put in by mistake?! The horror, the horror. It's making me nervous just thinking about it.