I have some quarts of Castrol Edge 5w-50 tagged with formulated for classic cars I picked up years ago during one of the early Autozone clearances.
I was contemplating mixing it with a 5w20 and throwing it in my Cobalt for a 5k oil change. But, if memory serves correct this formulation as a high(er) ZPPD content and I burn around a quart over 5k miles.
Wondering if the ZPPD content is significant enough to do damage to the catalytic converter over a couple of oil changes or if content wise it’s not that much different than other oils?
I was contemplating mixing it with a 5w20 and throwing it in my Cobalt for a 5k oil change. But, if memory serves correct this formulation as a high(er) ZPPD content and I burn around a quart over 5k miles.
Wondering if the ZPPD content is significant enough to do damage to the catalytic converter over a couple of oil changes or if content wise it’s not that much different than other oils?