I am not sure where you are from but I would look for a Caterpillar dealer in your area with an oil analysis
Department it will cost you around 15.00 dollars and you will know for sure. You will have to ask to have them check for sugar and it usually takes about a day to get you results back. If they sugared the oil it depends on how much they put in it, but sometimes I have seen it get hard in the bottom of the pan like wet sugar in little hard clumps. I have seen oil that I did not see any evidence of sugar that tested positive so the only way to know for sure it test it