Originally Posted by
Flagrum_3
Did you actually see this letter or was it just her telling you her rendition of what it said? ......I would be quite surprised if such info or such a letter was true or existed, that it would not have been sent to all MazdaSpeed owners.
I thought we had been thru all this in another post!! Just use 5w30 oil in your Speed, and don't worry about using synthetic, it definitely will not void any warranty...that you can take to the bank..I have yet to hear of anyone loosing their manufacturers warranty on the grounds of using synthetic oil, I believe it is a falicy.
_3
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