Good morning,
Trying to get a feel from the members on "updating" to full synthetic oil for our older machines.
I've read here and on other boards, that many are switching to Valvoline VR1 full synthetic with no adverse affects.
I have been a fan of Castrol GTX 20W50 in all my vehicles for decades, but the drop in ZDDP in that brand has me concerned.
I know this is subjective, but I am curious as to what y'all think and use.
Thanks, Bill