Synpower does have a solid virgin TBN.
It appears to lack solid TBN retention, though.
I posted a pretty lackluster UOA of Synpower 10W-30 SM after a 5K run in our Forester last summer.
If I were running a car to OLM/MM limits, as I'm doing with my '12 Accord, I don't think Synpower 0W-20 would be one of my top picks.
Originally Posted By: fdcg27
Synpower does have a solid virgin TBN.
It appears to lack solid TBN retention, though.
I posted a pretty lackluster UOA of Synpower 10W-30 SM after a 5K run in our Forester last summer.
If I were running a car to OLM/MM limits, as I'm doing with my '12 Accord, I don't think Synpower 0W-20 would be one of my top picks.
I thought that was the sm variety, not sure if that is a fair snapshot of there current line up.
I have read all sorts of reasons why folks on here do not care for it.
No moly
No titanium
No boron
Low TBN
Sodium add pack
Etc.
Shade tree chemists don't care for it, yet it seems to always perform well. I like it and try to cheerlead for it when I can since it really doesn't get the love I think it deserves.
Been a while since I've compared synpower UOAs. But from what I've seen in the past they were always excellent, regardless of TBN retention and specific additives, or the lack thereof.
If it was priced lower than competitors, and widely available, I would run it.
I tried Synpower just as I might try any other oil.
It didn't seem too impressive in the application I ran it in.
For what I paid for it, though, I can't be too upset.
Maybe the SN version is better?
OTOH, I love Nextgen Maxlife, which has a very similar add pack, although it does have a smidge of moly.
I posted a UOA of it from a 4K run in the BMW last summer.
You couldn't hope for a cleaner UOA with any oil from any engine.
Originally Posted By: dparm
The off-the-shelf SynPowers always have mediocre starting TBN. The versions they sell to shops and mechanics are always a bit more stout.
Can you please provide proof they make a completely different line of lubes in all weights for shop use? ...in any weight for that matter?