Originally Posted by spec_ops57
I'm scared to switch to synthetic cause I don't want to have to be ripping apart the oil pan to put a new gasket and whatever in when it leaks
Well reguardless of what kind of oil you have in, if it leaks you're gonna have to replace the gasket. BTW it's not hard at all to replace but synthetic is no more likely to cause a leak than normal oil. Wean it on a synthetic blend for one or two oil changes then switch to fully synthetic.
Synthetic keeps it's viscosity no matter what the operating temperature(I think).
Maybe it's all in my head but my 4.0 seems to run a lil smoother w/synthetic.