I have an '02 with the 4.7.

The manual states to use 5W-30 for ambients less than 100F and 10W-30 for 0F to above 100F. I used to tow our 4000lb boat/trailer with the D in the summer, so I began using 10W-30 all the time (synthetic).

Do you think its ok to use the 10W-30 year round? or should I go to the 5W-30? Sometimes when I first start up the D, I can hear a ticking noise coming from the engine at idle, but it goes away as the engine warms up.

Could this ticking be due to the 10W-30?? I have 95k miles... In winter, the ambients here might get down to 32F... otherwise its 35-40F all winter.

Thanks,
Louis

 

5w-30 or 10w-30 isn't going to make a difference much in these engines, not enough to present a ticking noise. The 4.7's however are famous for making a ticking noise on a cold start for a little bit but like you said, goes away once engine starts getting warm.

 

the ticking noise in the 4.7 is normal, if you dont see temperatures below 0F you should be fine with the 10w30 year round, its what i run year round without any problems

however for most people 5w30 is the best choice for the 4.7 as that is what dodge prefers in there.