hello- my first post! purchased my first skid steer for personal use a month ago. a 2003 cat 226 with 1800 hrs. in excellent shape and happy with it. have my first question/problem. changed all the fluids out of her just to make sure everything was new,etc. for engine oil i put in rotella t 5w-40 synthetic since winter is around the corner and i live in the north east. oil met cat specs. after putting in this oil a day or two later the oil pressure light has come on- but it is very very faint-the light is not bright. i am pretty handy and do most of my repairs and all of my preventive maintenance. i was wondering if this is just coincidental or maybe the synthetic oil might be the culprit?. i dont have the service manual yet- cant swing the price-only the parts catalog and the operations/maintenance manuals. any of you guys have any ideas where i should look first? thanks. rob