Originally Posted By: burla
Since the beginning of this forum the question of is my truck gonna last longer if I use brand a or brand b still hasn't been answered. But some manu's are using lifetime fluids now that are pao, so who I am to toss shade on what they are doing?
Well, exactly. As always, you have to match the fluid to your expectations in some respects, too. If something is going to be trotted out as a lifetime fluid or a long drain oil in a severe application, one had either ensure one has an appropriate fluid or modify intervals, if needed.
My view, at least, is if something things that an SN/GF-5 5w-30 conventional is unsuitable to protect their application, base stock hunting might not be the most appropriate answer to their itch; finding something with more robust specifications might help, and that will probably involve a base stock improvement, but more than that, too. Similarly, with the taxis back in the day running 10,000 km intervals on conventional and being driven to the junkyard, base stock improvements likely wouldn't have helped.
Also, with comments about Nissan ester oil, remember, it's not an ester base stock oil.