First - a quick hello and thank you to all who have contributed. I just found this forum last week noodling around about the zero weight oil that my new (to me) Tahoe calls for. From that, I came across Blackstone and am anxiously awaiting my first test kit to arrive. How did I make it this far without finding out about used oil analysis?? THIS FORUM IS AWESOME
Second - a bit of history. I just bought a 2015 Tahoe a couple months ago to replace a 2008 Yukon that replaced a 2003 Tahoe. And that's my GM history. It had 59k miles on it. I just turned 65k and had engine oil service performed at good ole Molle Chevy. I grabbed an oil sample before dropping it off which will be my first ever UOA.
I'll preface the rest with the fact I didn't do any research on the vehicle in advance. My older Tahoe and Yukon both came from CarMax with 50k ish miles on them and I had great experience with them. The 2015 Tahoe, I bought unseen. And for some DUMB reason, I thought I had 30 days to essentially return it if I wasn't happy. Nope, that's the basic CarMax warranty. It's 5 days that you can return the vehicle if you so choose. And of course, just few days past the 5 day mark, I decided to research the VIN (beyond the basic AutoCheck from CarMax). And here's where my stomach started to turn...
It appeared to be coming off a 3 year lease, out of NYC, and bounced through 2 auctions before landing at a small-town midwest dealer and then eventually at CarMax. But WHY?? Ya, it had a collision reported, but it was with a BICYCLE. I felt I got a good deal mainly because the history was blemished by a collision. I shrugged it off though knowing you can't do THAT much damage hitting/getting hit by someone on a bike.
But then someone asked me how many engines hours were on it. [censored]... I didn't think about that. Welp, it was about 4300!! 4300 hours in 3 years is just shy of 4 hours per day. Who spends an avg of 4hrs/day in their vehicle?? And an average speed of 13.7 mph. The only way to rack up that number of hours is an Uber right? Or hotel shuttle maybe? Either way, it came out of NYC, which makes sense with high engine hours and overall avg speed, it's got the extra undercarriage rust to prove it, and only had dealer oil changes. Given the picture so far, I'm betting no other maintenance was done (except some front brake pads LOL)
So how concerned should I be? What issues could I be looking at down the road assuming the most minimal maintenance was done? It's like I bought a NYC Yellow Cab. UGH!!
I will post my first UOA as soon as I can get it back. In the meantime, planning to drain/change coolant, front/rear diff, transfer case, tranny and brake fluid. Any recommendations on what to use welcomed - coolant, gear oil, ATF, tranny filter, engine oil filter, brake fluid, air filter etc...
It's a Missouri daily driver, 50/50 hwy/city, summertime pop-up camper towing and some fall/winter 4x4 chasing deer and pheasants around the Midwest.
Cheers!
2015 Chevrolet Tahoe 4WD LT with Max Trailering Pkg
Second - a bit of history. I just bought a 2015 Tahoe a couple months ago to replace a 2008 Yukon that replaced a 2003 Tahoe. And that's my GM history. It had 59k miles on it. I just turned 65k and had engine oil service performed at good ole Molle Chevy. I grabbed an oil sample before dropping it off which will be my first ever UOA.
I'll preface the rest with the fact I didn't do any research on the vehicle in advance. My older Tahoe and Yukon both came from CarMax with 50k ish miles on them and I had great experience with them. The 2015 Tahoe, I bought unseen. And for some DUMB reason, I thought I had 30 days to essentially return it if I wasn't happy. Nope, that's the basic CarMax warranty. It's 5 days that you can return the vehicle if you so choose. And of course, just few days past the 5 day mark, I decided to research the VIN (beyond the basic AutoCheck from CarMax). And here's where my stomach started to turn...
It appeared to be coming off a 3 year lease, out of NYC, and bounced through 2 auctions before landing at a small-town midwest dealer and then eventually at CarMax. But WHY?? Ya, it had a collision reported, but it was with a BICYCLE. I felt I got a good deal mainly because the history was blemished by a collision. I shrugged it off though knowing you can't do THAT much damage hitting/getting hit by someone on a bike.
But then someone asked me how many engines hours were on it. [censored]... I didn't think about that. Welp, it was about 4300!! 4300 hours in 3 years is just shy of 4 hours per day. Who spends an avg of 4hrs/day in their vehicle?? And an average speed of 13.7 mph. The only way to rack up that number of hours is an Uber right? Or hotel shuttle maybe? Either way, it came out of NYC, which makes sense with high engine hours and overall avg speed, it's got the extra undercarriage rust to prove it, and only had dealer oil changes. Given the picture so far, I'm betting no other maintenance was done (except some front brake pads LOL)
So how concerned should I be? What issues could I be looking at down the road assuming the most minimal maintenance was done? It's like I bought a NYC Yellow Cab. UGH!!
I will post my first UOA as soon as I can get it back. In the meantime, planning to drain/change coolant, front/rear diff, transfer case, tranny and brake fluid. Any recommendations on what to use welcomed - coolant, gear oil, ATF, tranny filter, engine oil filter, brake fluid, air filter etc...
It's a Missouri daily driver, 50/50 hwy/city, summertime pop-up camper towing and some fall/winter 4x4 chasing deer and pheasants around the Midwest.
Cheers!
2015 Chevrolet Tahoe 4WD LT with Max Trailering Pkg