At my previous job, we had a salesperson take a brand new 2016 F-150, 2.7 Ecoboost to 28k with no oil change. It wasn't down any oil, but crude
Originally Posted by GMguy84
2001 Suburban 5.3
318,200 miles
$1500 SCORE !! Engine is smooth and COLD A/C
New to my "Work truck" highway cruiser fleet
Oil Not changed in 23K mile ?? Oil sticker on windshield had a " Pennzoil logo Next oil change due at 294K April 2019. I bought it with 318K miles and oil was CRUDE BLACK !! ???? YIKES !!!!!!!!!! Previous owner said he only used to it drive to work every day 75 miles round trip ?? Not to put miles on his new ram 2500
Out: "Texas Crude black" Pennzoil conventional bulk
Don't remember filter
+ Gunk Oil synthetic flush cleaner 32oz
In 5qts of Castrol GTX ultraclean 5W30 and 1.5 Mobil Super 10W30
Protec 166 filter
Doing this as a 2000-3000 mile OCI to completely flush out old Pennzoil sludge
Then in goes Mobil 1 10W30 and a Fram Ultra Filter
Dave
At my previous job, we had a salesperson take a brand new 2016 F-150, 2.7 Ecoboost to 28k with no oil change. It wasn't down any oil, but crude black. I took it in for a change immediately and then personally drove the truck for 10k myself. It was a smoker after that change. Did a 2500, then a 5000 mile change, and it was fine after that. At 140k it started using oil, so it was sent off to the auction house.
The oil always seemed to turn black more quickly on that engine than any of the other trucks we had.
Similar story with a 2015 F150 and a 5.0 that went 23k from new to when we discovered the oil hadn't been changed. That truck is still in the fleet, running very well, with over 150k on it.