M1 5W/10W-30HM are the only full syn HM besides the sometimes hard to find, full syn Maxlife. Your choices are limited to these 2. For leaks, the syn blend ML works best for me. This syn blend oil can go 5-6000 miles usually.
Valvoline Maxlife "Full" synthetic, not the maxlife synthetic blend.
If cant find in stock parts house should be able to order. Maxlife can be found everywhere but typically its the "blend" but they do make a maxlife full synthetic.
Seal conditions, moly, runs thick in the 30 grade range.
so idk whats going on the bottle says maxlife full synthetic in blue letter on the fron of the 5 quart jug. big blue capital letters like this FULL SYNTHETIC. but the back on the bottom says maxlife has always used a synthetic blend. [censored] how can they say both how do you know which it is. maxlife oil is like 16 a jug and its red this jug is silver and says fullsyn on front and was 21 so wierd