i use just plain ol castrol GTX 10w30 and change it 2 or 3 times every 3000 miles.... just changed it today as a matter of fact and the filter and oil that was in it from last change still looked good....

better safe than sorry i guess...


By the way, why waste money on synthetic just to change it so often... If I keep changing it as often as i do there is no point... id rather keep buying the 12 qt cases of castrol from walmart for 13 dollars and get 3 changes out of it, than pay 20 every time i change it....