Used oil analysis for 5.7 using 10W-30

On this oil change interval, my wife and I took a vacation to Big Bend NP and Guadalupe Mountains NP. We towed a 5000 lb trailer through the West Texas mountains in some of the most brutal heat possible. We also did some really cool 4 wheeling at Big Bend. Looks like the oil and the engine did just fine.

 

Y’all get tbn next time

it tells you the condition of the oil

 

TBN or TAN might be useful if I were interested in extending my oil change interval. I am not so I didn't see the point in it.

 

Interesting even with 10/30 they say it's a little thin viscosity wise

Thanks for posting this

 

understood.

I only go 5k.

The TBN tells me how much life is left.

Ex..Kirklands 0w-20 still had a 4.6 tbn after 5k miles. Pennzoil PUP was 4.8 after 5k.

all my wear metals were fine.