When to change oil
My truck (2016 Chevy diesel) gives me a percentage of oil usage left. At what percentage do you fellas normally change your oil? I normally will let mine get to around 12%-15%. Just curious if you ...
Forum Discussion
On the recomended change interval or the onboard oil life. I think there are many parts to this.
1) What detailed oil analysis and careful monitoring yields for oil life
2) What consumers will accept for change interval.
3) typical mileage/year for vehicles.
IMHO (2) wins out. For decades of "you must change oil every 3K miles" getting people to accept a 5K, 7500, 10K or longer oil change interval is hard.
GM solved (3) by having the DIC drop 2%/week to meet the "change the oil at least once/year". Some other mfg still have the once/year interval or DIC, but don't monitor time. I have once such vehicle, with covid we only drove it about 5K miles last year, oil life was down to 50%, but it had hit the one year mark, and no dash indicator to change oil.
1) What detailed oil analysis and careful monitoring yields for oil life
2) What consumers will accept for change interval.
3) typical mileage/year for vehicles.
IMHO (2) wins out. For decades of "you must change oil every 3K miles" getting people to accept a 5K, 7500, 10K or longer oil change interval is hard.
GM solved (3) by having the DIC drop 2%/week to meet the "change the oil at least once/year". Some other mfg still have the once/year interval or DIC, but don't monitor time. I have once such vehicle, with covid we only drove it about 5K miles last year, oil life was down to 50%, but it had hit the one year mark, and no dash indicator to change oil.
