Originally Posted By: irv
Originally Posted By: OVERK1LL
Originally Posted By: irv
With the 0W-40 having a higher ZDDP content, is it still ok to run this oil in a vehicle with catalytic converters?
I believe that is why most oils, other than the Mobil-1 0W-40 European Formula, have very little to no ZDDP in them due to the possible issues they cause with the convertors?
They ALL have ZDDP in them, and it isn't "little to none", but rather just reduced from what it was years ago.
But is it not a fact that Mobil-1 0W-40 European Formula has the highest amount ZDDP in it?
If so, I assume it is still not at a level that would cause issues??
Just asking.
40-weight oils aren't subject to the same limits as the energy conserving 20 and 30 weight oils for starters, but yes, it has higher levels of ZDDP as well as other additives than traditional PCMO's, but really not much if any higher than other oils that meet the same or similar spec's as it, such as PU 5w40, GC 0w30....etc.
It won't cause issue with catalytic converters.