Now when it comes to motor oil for the 3rd gen, what is the best oil to use? Is Mobil 1 full synthetic 10W-30 a good oil to use?

 

$.99 coastal

 

Is full synthetic oil bad for a rotary engine?

 

synthetic does't burn very well, so i wouldn't use it if you have an omp.
i premix with my fuel, so i could run synthetic if i wanted to, though.

 

Idemtisu 20W50 synthetic

www.rx7.com

 

i've taken a lot of motors apart and haven't ever noticed a difference with the way the internals look depending on any particular brand of oil.

the frequency of oil changes is infinately more important than the type of oil you use.

 

I use castrol gtx 10w-30 all the time for the past 2 years. Never had a problem related with oil.

Might go with idemitsu this summer though.

 

same here.

 

What about 10-40 conventional?

 

Why not?

Honestly, there is really no notice in difference for the street.

 

REAL OIL 20w50 ALL THE WAY!!!!!!

Bought my car from www.rx7.com and thats all they told me to ever use, syntehtic is evil for the FD... as they said dont burn very well...

 

Oh crap... I use this (http://www.mobil1.com/USA-English/Mo...ce_15W-50.aspx) Is it time for a change to the rx7.com stuff... I've always wanted to get that stuff anyways...

 

20/50 is good in the summer or if you have lots of bearing clearance, but my car produces ~40psi at idle, and peaks around 120 @3k rpm with 10/30 in there. i'll probably run 5w30 next oil change and 10/40 in the summer.

and if anyone REALLY wants to use synthetic, just blow the $13/qt and use torco.