[Formulajones]

Originally Posted by 78w72

partially true on the oil, older oils may have had one specific higher amount additive, zddp. but todays oils & in the last ~10-15 years are much better in every other way than older oils. the base stocks & modern additives make up for a little lower zddp levels.

the article posted in this thread explains there are different types of zddp now & according to valvoline & other brands, the zddp used today is longer lasting & therefore doesnt require as much as the older oils did. along with other modern anti wear additives i would much rather have todays off the shelf oils than ones from the 80-90's & especially the 70s that were sludge prone & couldnt handle heat anywhere near as well as modern oils.

Those links mention as many as 49 different types of zddp used today, and some of it doesn't play well with others, which goes on to mention that's why extra additives poured in to existing oil isn't always a good idea. Those links also mention how some oils with higher levels of detergents (like diesel) are a bad idea as they counter act the zinc and phosphorous additives that everyone is after. Another one mentions how diesel oil is going through another major change this coming year due to the higher demands of EPA and these newer engine requirements coming out. That could mean better, but it usually doesn't given the history, lol. Time will tell.

There is a ton of good reading in there, I just wonder how many actually bother to read any of it.