Hello everyone.....a Newbie here. This site is amazing and I can't believe how many knowledgeable people are here. I did a search for my question but didn't find an answer...so here goes. A high TBN number is a good thing. Does it matter if the high TBN number is in a dino vs syn. oil? From what I've read a syn oil is always better than dino oil, correct? I'm running all my vehicles to 5000 mile between oil changes. So....if the oil gets "worn out" the other additives in the oil will be used up before I must worry about the TBN, yes? All my vehicle are driven in a manner that all the "experts" say is tuff on oil, ie, lots of short hops 1-15 miles then the occasional blast down the highway at 75 mph for 400 + miles every 3 months or so. Thanks for your inputs. (be gentle now
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