water in the dipstick isnt always a sign of water in your oil. have you washed your car whith a presure washer before ? if so like me and my dipstick you may have got a small amount of water in there, also with the oil i use 10w30 or 15w30 and trust me its thin works realy well until you get a small leak it does what you said happerned to your car it sprays all over the place. i had a small oil leak at the rear of my rocket cover and it sprayed oil, under moderate exceleration all over my firewall, and all down my gearbox till it final stoped half way down my tailshaft. also my engine breather had a hose going to my airfilter and i thort it may have caused a vacume and when the hole formed the oil escaped. just a thort and good luck
cheers pauly