Hypethetical scenario...
2 seperate oil changes performed on the same vehicle with identical driving style.
1st oil change done in March at 4500 mile interval after driving all winter long (northern climate) using 5w/30 Mobil 1 oil.
2nd oil change done in September of the same year at 4500 mile interval after driving all summer long on the same lot of 5w/30 Mobil 1 oil.
Question:
If an OA was done on oil change #1 and the TBN read 4.5, shouldn't the TBN read approx 4.5 on oil change #2 OA? How does heat or cold affect TBN if nothing else has changed with the vehicle other than total mileage on the vehicle?
Ken
2 seperate oil changes performed on the same vehicle with identical driving style.
1st oil change done in March at 4500 mile interval after driving all winter long (northern climate) using 5w/30 Mobil 1 oil.
2nd oil change done in September of the same year at 4500 mile interval after driving all summer long on the same lot of 5w/30 Mobil 1 oil.
Question:
If an OA was done on oil change #1 and the TBN read 4.5, shouldn't the TBN read approx 4.5 on oil change #2 OA? How does heat or cold affect TBN if nothing else has changed with the vehicle other than total mileage on the vehicle?
Ken
