Got the case of 10w30 today.Open it up and notice the gallons were made on 10/07/02 and they are CH-4/SJ rated.Is this stuff too out of date? Okay, the oil is probably OK sealed up and in the unopened case,but SJ is a little old.Also, there is no mention of ISO SYN anywhere on the box or bottle. I was wanting to use this for the Cali trip.4 quarts 10w30 1 quart 15w40(which is very fresh, CI-4/SL rated made 6/18/03). Would I be better off just using some regular SL rated 10w30 like Pennzoil,Chevron,or Castrol? I know this oil for the trip thing is getting old One more thing. I have got 2 quarts of the 10w30 Chevron Supreme SL made 3/12/03. So I could use these with 2 quarts delo 10w30 and a quart 15w40.That would get some moly in there, but maybe this old delo 400 is still better than their supreme. Nobody uses delo400 10w30 around here so I guess that's the newest I am going to get. Thanks guys!