Type S

my jeep currently has 183k miles on stock tranny and engine.i always use 10W~40W castrol GTX motor oil..but i have found out that after a certain period,oil lose (it has the oil pressure gauge) due to heat or friction...so should i use 20W~50W which is more sticky and good for high temperature egnine..so what do u recommend?thanks

Pull_T

A high miler like that one would prolly be well served with some 20-50. "Good" protection is pretty much out the window as your top priority now and the 20-50 should help you seal a bit better.

At the very least it won't hurt to try it and see. You certainly aren't going to do any damage.

CO-CL-S

If your engine is running hot, then go for a thicker oil. If not you're fine where you are. Oil lose at over 100,000 miles is bound to happen (engines get looser, rings/cylinders wear, etc.)..

rockinTLS_RENAMED

I use 20W-50 on my 87 Legend with 216K on the odo. I started using oil (burning) and it helped alot. Won't hurt a thing.

2003 CL type S

4 those kinda miles only use 20-50