Hi doc. How about Caltex Delo (Silver) Monograde 40. I use this oil from time to time on short OCI (3k kms max) - interchanged with the Caltex Delo 15w-40 oil.

By the way the shipment has arrived in the post office in North Hollywood. My friend is picking it up today or tom. Can't wait to get the filters. I'm having it shipped here together 8-10 (5 quart) bottles of Mobil 1 TDT.