Thanks for all the replys...wow. So my cap says 5w20 so the other question is should I use SYNTH? Cause the dealer said there was no difference and don't need it...true or not..?

 

I switched my 05 over to synthetic right after I bought it. I used Casterol Syntec, changing at 3k. After a couple of changes I went to RP and never looked back. People have told me that if your engine isn't burning or leaking oil then you can try synthetic. And I use 5w20 like the manual says to and my filter is mobil 1.

 

***************************

 

shouldn't be a problem. I go 5k on mine, I think some on here go as far as 8k. I think things like what kind of driving you do, how many miles on the engine, stuff like that determine how far you should go between changes.

 

6k on RP and a good quality Wix, Mobil 1 or Purolator filter. As stated my RP at 6k was tested by a neighbor from his Hemi and had better retained qualities than when he tested Mobil 1 after 3k miles...

 

Well I guess the next oil change I get I will have to watch and make sure they use 5w20 synth. I have heard some places try to sneak and put in bulk 10w30. And once again thanks for all the replys

 

Mobil-1 is $22 a gallon at walmart...about $4.50 a qt for the other two. Same with penz plat and many other base stock III "synthetics". As far as extended intervals i'd only do that with IV or V oils like RP/Amsoil...with a new filter halfway through. If you're only talking 5k though you should be fine with any decent synthetic.

 

Cool....Thanks for the great info....

 

Since we are the topic of oil, Is there a certain type a good type of gear oil? I was told it should be changed more often if I have been using 4 wd and I was in the snow. Also someone said I shouldn'e use 4wd if it's dry out is that true? what about if it is wet from rain?

 

with these newer trucks ( non locking hub ) the FD is spinning all the time so it makes very little difference whether you engage 4wd or not. they are absolutely correct about not using 4wd when its dry, the front and rear wheels are connected through the TC and if they can't slip your drivetrain will bind, possibly blowing your TC and more. i have never used it in the rain, except maybe to get going on a steep hill at a slippery intersection.

i live in Canada and i only use 4wd when i need it, which isn't very often.