This is in my 2001 Silverado... Terrible picture, but looks pretty clean to me.
History from much before 100k is unknown. My brother-in-law had it for around 80k miles and typically used conventional oil (sometimes high mileage -Castrol maybe?- and sometimes a blend I think).
I've had it for the 30k miles. Changed the oil at least once a year. Intervals have been anywhere from 2,000 to 4,000 miles under my care. I've only used full synthetic. I've used Mobil 1, Pennzoil Platinum (typically high mileage), and Rotella Gas Truck most of the time until the last year or two. Rotella Gas Truck was easily the quietest (with 'piston slap' in mind...).
Lately my favorite has been Mobil 1 ESP 0w30 but did have a relatively short interval of Valvoline MaxLife full synthetic (I forgot what my reasoning was for that short interval). I do a fair amount of towing so I don't feel comfortable extending intervals because I definetely see high revs for extended times towing up steep grades.
Current fill is the 0w-30. It will likely have a 4,000 mile interval with a significant portion of that towing our travel trailer this summer.
Current odometer reading is 208k... But real life is likely at least a few thousand more than that because it's not corrected for the slightly larger tires.
History from much before 100k is unknown. My brother-in-law had it for around 80k miles and typically used conventional oil (sometimes high mileage -Castrol maybe?- and sometimes a blend I think).
I've had it for the 30k miles. Changed the oil at least once a year. Intervals have been anywhere from 2,000 to 4,000 miles under my care. I've only used full synthetic. I've used Mobil 1, Pennzoil Platinum (typically high mileage), and Rotella Gas Truck most of the time until the last year or two. Rotella Gas Truck was easily the quietest (with 'piston slap' in mind...).
Lately my favorite has been Mobil 1 ESP 0w30 but did have a relatively short interval of Valvoline MaxLife full synthetic (I forgot what my reasoning was for that short interval). I do a fair amount of towing so I don't feel comfortable extending intervals because I definetely see high revs for extended times towing up steep grades.
Current fill is the 0w-30. It will likely have a 4,000 mile interval with a significant portion of that towing our travel trailer this summer.
Current odometer reading is 208k... But real life is likely at least a few thousand more than that because it's not corrected for the slightly larger tires.
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