<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by PhilD:
You can put it in straight away, no need to wait. Mercedes, BMW, Aston, Corvettes all come with Syn from day 1.
There is absolutely no reason to wait with today's modern engines. But you can if you want. </div></BLOCKQUOTE>
That is true, you can run it from day one, so long as it meets GM specification GM6094M, and every synthetic I have ever seen meets GM spec GM4718M, which is actually a higher specification than 6094.
However, on another note, do you require synthetic? Modern oils meeting the GM spec 6904 are extremely reliable, with excellent additives.
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