what oil useing
Logistics Pro
Joined: Feb 2004
Posts: 4,460
Likes: 14
From: The Land Of Time
I use the MC 15w40 all year round. Yes a synthetic 5w40 is a great choice. I choose not to use it because I change my oil very frequently. I am **** abotu maintence on my own truck. I will not go anymore than 4 months without changing the oil. I feel its cheap insurance even though some say I am crazy. Most here are using Rotella, Mobil 1 Delvac, or the Schaffers.
Do a search and you will find tons of posts on this. What you need to male sure is that it is a CJ-4 rated oil and you will be good. The synthetic is great for these engines and helps to elimate some of the siction issues. Make sure you also use a good quality filter too, Motor Craft, Racor, or Fram only. The others "will fit" design can and will cause damage that will most likely not show up until you are well out of warranty.
Some time and money spent here on maintaing your truck will give you years of service out of that 6.0 Dont forget about your fuel filters either. Every 10,000-15,000 miles they should be done. I do mine twice a year needed or not.
Sarge
Do a search and you will find tons of posts on this. What you need to male sure is that it is a CJ-4 rated oil and you will be good. The synthetic is great for these engines and helps to elimate some of the siction issues. Make sure you also use a good quality filter too, Motor Craft, Racor, or Fram only. The others "will fit" design can and will cause damage that will most likely not show up until you are well out of warranty.
Some time and money spent here on maintaing your truck will give you years of service out of that 6.0 Dont forget about your fuel filters either. Every 10,000-15,000 miles they should be done. I do mine twice a year needed or not.
Sarge
Laughing Gas
Joined: Oct 2003
Posts: 1,082
Likes: 93
From: VA/NH
Rotella Syn 5-40. I use it mainly because of the temp variations in NE in the Fall, Winter and Spring. It easily can go from being within the temp to way outside the recommended temps for dino 15-40. I have 58k trouble free miles on my 6.0 and started running it around 10k. I actually run it in an 07 Hayabusa too believe it or not. 10k miles this summer alone.
Posting Guru
Joined: Apr 2008
Posts: 2,392
Likes: 1
From: Green Lane, Pa.
I use the MC 15w40 all year round. Yes a synthetic 5w40 is a great choice. I choose not to use it because I change my oil very frequently. I am **** abotu maintence on my own truck. I will not go anymore than 4 months without changing the oil. I feel its cheap insurance even though some say I am crazy. Most here are using Rotella, Mobil 1 Delvac, or the Schaffers.
Do a search and you will find tons of posts on this. What you need to male sure is that it is a CJ-4 rated oil and you will be good. The synthetic is great for these engines and helps to elimate some of the siction issues. Make sure you also use a good quality filter too, Motor Craft, Racor, or Fram only. The others "will fit" design can and will cause damage that will most likely not show up until you are well out of warranty.
Some time and money spent here on maintaing your truck will give you years of service out of that 6.0 Dont forget about your fuel filters either. Every 10,000-15,000 miles they should be done. I do mine twice a year needed or not.
Sarge
Do a search and you will find tons of posts on this. What you need to male sure is that it is a CJ-4 rated oil and you will be good. The synthetic is great for these engines and helps to elimate some of the siction issues. Make sure you also use a good quality filter too, Motor Craft, Racor, or Fram only. The others "will fit" design can and will cause damage that will most likely not show up until you are well out of warranty.
Some time and money spent here on maintaing your truck will give you years of service out of that 6.0 Dont forget about your fuel filters either. Every 10,000-15,000 miles they should be done. I do mine twice a year needed or not.
Sarge
Anything wrong with the CI-4 rated oil?
Senior User
Joined: Sep 2006
Posts: 279
Likes: 0
Recently made the switch to Amsoil. Partly because I carry it at the shop and I get it at a decent price.
I moved my intervals up to 10k w/ oil analysis and chane filters at 5k. So far, the analysis have come back fine and I can probably move to 12.5k mile intervals. I'll stick to 10k.
Call it what you will, but I picked up 1-1.5 mpg from just changing type of oil. This is after many tanks of fuel in very simular conditions, towing and not towing.
The bigest issue is keeping the oil clean. That in itself is more important than the type of oil.
IMO, of course.
I moved my intervals up to 10k w/ oil analysis and chane filters at 5k. So far, the analysis have come back fine and I can probably move to 12.5k mile intervals. I'll stick to 10k.
Call it what you will, but I picked up 1-1.5 mpg from just changing type of oil. This is after many tanks of fuel in very simular conditions, towing and not towing.
The bigest issue is keeping the oil clean. That in itself is more important than the type of oil.
IMO, of course.
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Logistics Pro
Joined: Feb 2004
Posts: 4,460
Likes: 14
From: The Land Of Time
I believe that the CJ-4 is the latest rating, but I am not sure 100%. Hopefully someone here with more knowledge of that will come along and post up. I stick with the MC stuff and shorter change intervals because of the price I get it at and I can write it off anyway.
Sarge
Sarge
Postmaster
Joined: Mar 2007
Posts: 2,612
Likes: 2
From: Dunwoody, GA
Most likely not. It's probably just an older bottle, but the oil is the same. I asked Valvoline this when I got some oil that were in bottles labeled as CI-4+ and not CJ-4. They said the oil is the same, that they met CJ-4 standards before they required it.
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