Originally posted by 13btt@Nov 10 2004, 22:09
Mazda always said you should use mineral oil only! However this recommendation was way back when synthetic oils were at their infancy and have since come a long way today. I regularly use Mobil S semi-synthetic since rebuild with no problems. I find it smoother than just mineral. The big deal is whether the synthetic burns clean or not but this is not to say that mineral oils burn clean!
If you really want to get excited about this you can blow big $$$ on the cleanest burning oil on the market which is Amsoil or Redline! This is from an "independent" test done on Aus.