[Tomko]

No they do not test TBN this is a new company used by Scheaffer Oil Co. They used to do the testing themselves never have had a TBN but they have always tested for fuel.

If you don't have a TBN how will you know that the oil is still viable?

 

[Tomko]

I've frankly never known a single person of all the gear heads I know who have ever had an oil related failure of any kind period that wasn't related to complete negligence such as never changing it period or having a vehicle burn oil to the point it runs out lol.

You know what, on reflection I'm in the very same boat. From 1980 through to today I can't think of anyone in my circle who lost an engine that wasn't through negligence.

My father had a very rare small block V6 that developed a problem at the wrist pin or crankshaft. We all know the venerable 4.3 V6 small block that launched in 1985, but the very first V6 small block was a 3.3 (200 cui) displacement in 1978 and my father had one. In 1980 he took it in to the base garage for what was called a "tune-up". He probably saved $20 instead of going to the dealer. Well these grease monkeys replaced the four inch tall air cleaner with one only two inches tall. It took over a year to discover this dumb-headed move and all that time ingesting ash from Mount St. Helens. Plus whatever crap oil they used varnished the dipstick with a permanent oil reading.

In some of my first moves as a Gearhead I dumped solvent through the intake and crankcase cleaner in the oil. I did a half-dozen 50 mile oil changes to clear the oil system, but the damage was done. 40,000 miles later a connecting rod loosened up at the wrist pin or crankshaft. He sold the car to a garage friend for $200. He rebuilt the engine and his youngest son drove the car for another four years or so.

That $20 saved by not going to the dealer cost easily 100 times that. Since then all of his cars have been dealer serviced.