All day everyday and never keep proper maintenance on them. If someone increased driving range then
there maintenance for a vehicle must increase as well. Roughly 95% of companies completely ignore this fact. The more you use somthing the quicker it breaks down. The proper maintenance must be adhered to in order to prevent this.
Al lot of car companies have higher insurance rates because of this. The ones that do not take care of things and just drive however they see fit. You will also notice this same practice if you were to just jack up
or put it on a lift and look at the lubrication points of the Vehicle. Ball joints etc. Always check and ask people have they kept up with the proper maintenance of the vehicle. If they say no then this should give you thought to ponder and say "OK" in your brain. let me check some things out. aka the Proper fluid levels are they being kept or the oil consistency state. The filter has it been changed?, spark plug etc...
Is there oil in the gas or water ?
Is the water contaminated with oil or ?
Does the engine look like it has oil leaks ?
Does the Valve cover look like there is caked on oil ? Oil burnt on engine ?
Has the Customer used any other type of additive for there vehicle ever ?
Have they tried different oil products in the past ?
Are there any other problems with the vehicle besides what your trying to service?
Sometimes by asking simple questions. This can be a helpfull informative tool for anyone.
One time I had encountered a guy when I was changing oil for this particular shop. I changed the oil and ran it for a few minutes and checked again. He was happy and left. He came back with smoke blowing out the back end with hazard lights flashing. he came in screaming "you owe me a new car!" to the owner. I said "really?" I said "check this out".... Because I remember him previously asking me should he use his oil and I told him "no". I guess he forgot this. I said "ok, lets go to the back and pop the trunk......" He said "why do you want to do that !!!!!" I said "just do it for me please."
He did and there was the 15 bottles of oil, he went down the road and added it himself........ He then changed his story and tried to blame it on me. lol He said i told him to do that....which was a lie and far from the truth.
There are many stories like this. Please becarefull of unkept and improper maintenance levels of any degree.
This is why you sometimes have to flush first and then add to clean out what was there before. (Specially when or if there are signs of vehicle neglect and abuse.)
From Chris - OTG Guy USA.
Most Truck companies recommend conducting a Used Oil Analysis, simply because of the fact that majority will always have still good condition oil even after thousands of miles past their recommended mileage maintenance intervals; GTO merely improves this.