The reasons synthetic oils are better

[aj47coupe]

Hello all,
 
I have read this thread (not all pages, but most) and gleaned no more information than I started out with!
It\'s a shame that we cannot agree wholey on what is best.
 
I use Mineral Oil in my car as;
1) I\'m new to RX7s
2) Thats what Mazda says to use
3) My Car is practically standard
 
Would I be right, and help other newbies, in summarising by saying:
 
Use Mineral oil in a (mainly) standard car - Up to 300bhp?
User Synthetic in a Modified car - over 300bhp?

[DR SCHNITZEL]

This is a misconception, synthetic oils in fact burn more cleanly and leave less deposits than their petroleum conterparts.
 
Cheers
Simon

thats the clincher oil man...CAN YOU PROVE IT?:cheers