Just wondering, I recently saw the "new" Mobil 1 0w30 at PepBoys and it says on the package something like it meets or exceeds 10w30 standards... I have an 86 Toyota (4age engine I think) and an 88 Mazda, would that oil work in engines that old, or is it only designed for newer engines? Also, I have been adding some anti wear additives because they no longer sell the correct service code for my engines. Would I still have / be able to add them with this oil?