Supposedly new engines are pre-broken in these days; I'm pretty sure that's
true on the Corvettes (and that they get synthetic from new) and my wife's
JEEP just got a new engine at Chrysler's cost, and they said no break-in as
well but I'm waiting til the first oil change to swap to syn anyway. For any
do it yourself or shop done rebuild, you probably shouldn't use synthetic
Many people don't think you should use it anyway. . .you could start an
argument here. As long as you change your oil regularly, you should be ok.
At any rate, I started out with Valvoline synthetic, went to Castrol Syntec,
and am getting ready to shift to Red Line Racing Oil (sell racing and street
products) so I definitely prefer it.
58/56 Chevy Suburban
In a message dated 04/30/2000 11:12:26 PM, CLLLSLS@aol.com writes:
<< Hi everyone,
I've heard for the longest time that synthetic oil should not be used during
an engine's initial break in, but I've just read that GM has been putting
mobil 1 synthetic in Corvettes right off the asembly line since 1992! What's
the deal here and what's the real nitty-gritty scientific reason for using
natural over synthetic for break-in?
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959