Get the sample at your "planned" oil change mileage interval so you can see at that point if that is an interval to stick with. Do it sooner if you are losing coolant, otherwise do it at your next oil change.I purchased an old Land Cruiser with 200k+ miles on it and immediately changed the oil. The oil now has about 500 miles on it and I'd like to test it. Is that too soon to highlight any engine problems?
Better late than never!Someone replied to a year old thread.
Having owned Horses there is no such thing as a free horse.Isn't doing a UOA on a used vehicle with 200k on it, the same as looking a free horse in the mouth?.,,,
How did the oil look that you drained out? If normal, [No sparkles or coolant in oil look] go the oil change interval .I purchased an old Land Cruiser with 200k+ miles on it and immediately changed the oil. The oil now has about 500 miles on it and I'd like to test it. Is that too soon to highlight any engine problems?