That is a great idea but it isn't the same as an oil sample. I want to do that at Pittsburgh Power as part of a tune up / analysis. An oil sample will tell you if you are throwing off ungodly amounts of metals and if there is a terrible amount of soot. In most modern engines soot on the top end is a killer. Rawze has a video on that.
Summit Truck Group - Be Careful !
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I've done this with a lot of used trucks where the oil has been changed, I always get indicators popping up when it is done that way and have rejected trucks with fuel in the oil or coolant leaks in the oil that cropped up after a dyno run. Another one that came up is copper levels went up sharply after a dyno run to indicate that the bearings were worn. I saw this in a fleet of trucks I was going to purchase, they did PM on all of the trucks which raised a flag and each one was dyno'd, producing 80% of full power but when the OAs came back, the before and after results were quite different, and this was with each one on the dyno for just a little while.
The ECM dump is done to see if there are anomalies, like hours and miles being off, past history does show up with a complete report and so does the ECM change out which happens a lot.
Again putting the truck on a dyno and letting error code show up with the ECM is a good thing, not to be ignored.
My goal isn't to bash you but to add to the advice on how to buy a truck and not get screwed, I've seen it happen so much that I am surprised most still ignore the advice of others who've done it for years.
Well I think I achieved what I set out to do. There was no in depth first hand experience of Summit Truck Group on this forum or anywhere else for that matter.
THERE IS NOW!
If anyone at Summit is reading this and actually is concerned about their reputation sack the thieving liar at Tupelo and pull your socks up when it comes to aftercare.
IF I say IF you care a lick what the public think of you.
PM me if you want names.
And that wraps this up.
A last word about oil sampling.
I and almost everyone else who buys a truck doesn't have time for that.
Whenever I have taken an oil sample I have had to mail it off to a lab somewhere.
After the post does their magic they will eventually get around to analyzing it and email me the results. This usually takes from between 2 to 3 weeks.
Meanwhile I am losing money waiting on this oil sample result.
The result email turns up - hooray !! It says all is well. So off you go and buy the truck.
The oil sample result comes it and it is not ok - Boo !!
Now I have to invest another couple of months looking for and buying another truck.
I do not have that sort of time.
It is true that when oil is changed you do not clean out all nooks and crannies so residue will be left. The only exception is with enthusiasts who flush an engine and I am sure that is not 99.99% of us. Also true that putting it on a dymo will 'exercise' the engine and release contaminants into the fresh oil.
Unfortunately the only relatively local (it was 60 miles away re the Lincoln purchase) place to get a quick oil sample is Speedco. Hardly a substitute for a proper lab. As for a dymo I wouldn't know where to start looking for one of those in a random town / city in the USA. A little bit rare.
It is regrettable but I can't turn buying a truck into another job.
Whenever you buy a 2nd hand vehicle you always buy some problems. The entire thing is a gamble you just do your best with all the circumstances involved.
If you already have a truck and are looking to buy a second one or a third then you are making money already. You can take your time. If the salesman wants to sell it to someone else then fine he can do that. No problem continue looking and it will all work out.
If you have one truck and are bleeding money from every orifice while you are looking and purchasing a truck then no this isn't going to happen.
It isn't a case of "due diligence" it is case of back against the wall with bills to pay.
I actually made this clear through the course of the thread but I guess it needed repeating.Last edited: Dec 20, 2018
joseph1853 Thanks this.
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