Hey all so basically I went to crappy and the last 3 oil changes in my 2000 d 4.7l has been 10w30.That is what crappy recommended in the computers.Just today did I see a post about people using 5w30..........Am I over weighting my engine?would that be why my engine acts little funny till she funny warm(i,e rough start and idle a bit)Thanks Kyle

 

I was always told that 10w-30 was for areas that generally had 0-100 degree temps and that 5w-30 was for colder climates where it got in the negative digits. you should use the lowest SAE viscosity grade for the expected tempature range....

 

as stated the 4.7 is 'recommended' to run 5w30, however in most place either one will work just fine

10w30 is for places that are above 0*F
5w30 is for places that are below 100*F (approximate values of course)

if you are between the two most of the year you can safely run either without causing any problems.
(i run 10w30 in my 4.7 and have for at least the last 40k miles without any problems)

 

Ok thanks guys.i'm up in canada so it gets cooler,then cold during winter.I'm gonna run it good and change oil to 5-30.Also last time i changed it I drove 40km then let sit foe 5-10min and after 15 min of drainning only 3l and a bit..come out

 

What is "crappy"

In Canada, 5w30 is what you should be using. Since it is a tad thinner and your cold conditions, change every 3000 miles if dino oil, 4000 if synth.

IndyDurango

 

10w-30 is fine for a 00 4.7. In Canada I would run 5w-30 year round , I do in my 4.7 . The motor is supposed to have 5w-30. There is not a great deal of difference between the 2 oils anyways, 5w flows better in colder temps than 10w while both perform as 30 weights in hot conditions. 10w-30 is not always thicker than 5w-30 , many brands 5w-30 are thicker in viscosity than another brands 10w-30 anyway. ex Mobil 1 5w-30 is thicker than Pennzoil Platinum 10w-30.

 

yup living in canada 5w would be the better choice

 

Yup, a 5w-30 is thinner when cold than a 10w-30, so it would flow better at startup, which may be why you run a tad rough until the engine comes up to temp.

I run 10w-30 myself in my 4.7 (Grand Cherokee), BUT I live in south Georgia, spend about half my time in Florida AND I have the HO version of the 4.7 which for some reason, actually specs the 10w-30 anyway...

 

I run 10W-30 Mobil One Fully Synthetic and it pours like water down to -54 degrees F. It has a better visosity for towing and harder working engines then Mobil One Fully Synthetic 5w-30 because it leaves a thicker film on the cylinder walls while the piston is up meaning less ware and more protection.

But seeing how the Durango 4.7L's engine uses 5w-30 is the "Preferred Lubricant" I would run Mobil One Fully Synthetic 5w-30 year round in Canada, however down in Florida or hotter areas especially when heavy duty use is nessassary I would use Mobil One Fully Synthetic 10W-30 in the 4.7L.

 

Thanks for the responses,i'm gonna switch! still kinda worried why only 3.6l came out when 6l should of...If I had some sludge build up would the 10w stick better to the old 5w?