2006 Silverado 1500 5.3 ltr i switched from white bottle valve 5-30 to synpower 5-30 a while back. Much information on this board says synpower is not a true syn but truly conventional oil . This is my question; local chevy dealer says when you switch to syn im fine just dont go back to conventional, am i safe to switch back to white bottle valve ? im not doing the extended OCI'S as i thought i would and thus not getting my $'s worth out of this oil. and in todays economy im ready to save some money where i can.
thanks.
thanks.