Anyone run synthetic oil in there H2? Does it run good? My H2 has 80,000 miles. Do you recommend changing to synthetic now?

 

Once you switch to a synthetic, you must ALWAYS use a synthetic from that moment on.
I use, along with MANY others, Mobil 1 full synthetic. 5k oil changes but I stay between 3,500 & 4k. You can't change your oil enough. ALSO, if you haven't swap'd your tranny & differential fluids, do so NOW! I used Royal Purple all around. Picked up about 1/2 mpg increase!

 

I also add a bottle of Sea Foam every other oil change. It quites the engine, free's up my lifters, etc... Also use it now and again in my fuel.

 

Thanks. Will there be a problem if i don't switch tranny and diff fluid right away?

 

I also run full synthetic mobile 1. I heard that once you go syn. u have to always use it is a myth.

Who does your work on your h2, 4unv

 

Will there be a problem if i don't switch tranny and diff fluid right away?