Proper Maintenance is kinda important
Fleet Mechanic
Joined: Jul 2013
Posts: 1,330
Likes: 65
From: 'Pitlock, Maine
Thanks big inch, like I said I will take advice from experience, down through the years I've figured out I can learn just as much from other people mistakes as I can from making my own as long as I'm willing to let myself..... lol, and I guess with age comes wisdom because lately I seem to be more willing to let myself than in the past.
Lead Driver
Joined: Jul 2004
Posts: 6,952
Likes: 512
From: Foothills, CA
Yeah, I think 5K is good for how this motor beats up the oil. But from what I have read, the 30 weight (10W 30, etc.) doesn't suffer from shear much at all versus the 40. I think that's why there are a number of HEUI guys going with a 10W 30 and have numbers to show it's doing fine. I'm not quite in that camp yet myself...
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Joined: Aug 2001
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Synthetic XW40 remains an XW40.
Josh
Hotshot
Joined: Jul 2005
Posts: 13,834
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From: Middle Tn.
Ford states 5,000 miles or 6 months whichever comes first. Do what makes you comfy. A lot of mfg's have the 6 month timeline also due to condensation and corrosive build ups in the oil.
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Elder User
Joined: Apr 2005
Posts: 907
Likes: 2
From: Jackson, TN
If you only average 20 mph, that would be about right, but if you average 40 mph, that would be 10,000 miles. The other thing to keep in mind is that short trips are harder on your engine and oil.
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Hotshot
Joined: Apr 2010
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From: Saratoga Springs,UT
You can Only Push Oil so Far
Those spool valve in the inject are one of the First things to give a guy problems with extended oil change
With a Bypass oil filter I think it would still be wise to not Go Over 7500miles
Hotshot
Joined: Jul 2005
Posts: 13,834
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From: Middle Tn.
That would be the reason for the 6 month time line. If you haven't hit 5,000 miles in 6 months you probably have many trips that didn't get the engine/oil up to temps to boil off condensation.
More Turbo
Joined: Aug 2009
Posts: 551
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I generally have a few months a year when I rarely get to operating temp, I UOA every oil change, and it never shows up in the oil analysis.
So I have to call bunk on the whole change at 6 months mantra, although I drive enough the rest of the year that I never get to 6 months with my 6.0. Other diesel engines I have sit for months without even running and the lube tests fine.
The current spec (CJ-4) is very good at dispersing soot and lubricating in general, and as many of you know I run to 7,500 mi. intervals with 10w-30. My suggestion is to just run them and don't over-think oil or oil change intervals. My current 6.0 is over 186,000 mi., all oil changes have been at 7,500 mi., injectors haven't been touched, and fuel filters go to 15,000 mi., just as printed in the owners manual.
Someone posted above that 5w-40 syn doesn't shear out of 40 wt. My personal experience with Rotella (3 consectitive runs a long time ago) is that it sheared to a lower viscosity than what my 10w-30 does! I have UOA data on this truck form new to current.
So I have to call bunk on the whole change at 6 months mantra, although I drive enough the rest of the year that I never get to 6 months with my 6.0. Other diesel engines I have sit for months without even running and the lube tests fine.
The current spec (CJ-4) is very good at dispersing soot and lubricating in general, and as many of you know I run to 7,500 mi. intervals with 10w-30. My suggestion is to just run them and don't over-think oil or oil change intervals. My current 6.0 is over 186,000 mi., all oil changes have been at 7,500 mi., injectors haven't been touched, and fuel filters go to 15,000 mi., just as printed in the owners manual.
Someone posted above that 5w-40 syn doesn't shear out of 40 wt. My personal experience with Rotella (3 consectitive runs a long time ago) is that it sheared to a lower viscosity than what my 10w-30 does! I have UOA data on this truck form new to current.
Hotshot
Joined: Apr 2010
Posts: 19,075
Likes: 247
From: Saratoga Springs,UT
In Addition to Fuel Delution of the Oil
Hotshot
Joined: Apr 2010
Posts: 19,075
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From: Saratoga Springs,UT
I thought they said 40w sheared to a 30w
Posting Guru
Joined: Jun 2006
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I generally have a few months a year when I rarely get to operating temp, I UOA every oil change, and it never shows up in the oil analysis.
So I have to call bunk on the whole change at 6 months mantra, although I drive enough the rest of the year that I never get to 6 months with my 6.0. Other diesel engines I have sit for months without even running and the lube tests fine.
The current spec (CJ-4) is very good at dispersing soot and lubricating in general, and as many of you know I run to 7,500 mi. intervals with 10w-30. My suggestion is to just run them and don't over-think oil or oil change intervals. My current 6.0 is over 186,000 mi., all oil changes have been at 7,500 mi., injectors haven't been touched, and fuel filters go to 15,000 mi., just as printed in the owners manual.
Someone posted above that 5w-40 syn doesn't shear out of 40 wt. My personal experience with Rotella (3 consectitive runs a long time ago) is that it sheared to a lower viscosity than what my 10w-30 does! I have UOA data on this truck form new to current.
So I have to call bunk on the whole change at 6 months mantra, although I drive enough the rest of the year that I never get to 6 months with my 6.0. Other diesel engines I have sit for months without even running and the lube tests fine.
The current spec (CJ-4) is very good at dispersing soot and lubricating in general, and as many of you know I run to 7,500 mi. intervals with 10w-30. My suggestion is to just run them and don't over-think oil or oil change intervals. My current 6.0 is over 186,000 mi., all oil changes have been at 7,500 mi., injectors haven't been touched, and fuel filters go to 15,000 mi., just as printed in the owners manual.
Someone posted above that 5w-40 syn doesn't shear out of 40 wt. My personal experience with Rotella (3 consectitive runs a long time ago) is that it sheared to a lower viscosity than what my 10w-30 does! I have UOA data on this truck form new to current.
Well, some of it. My truck has 175,450 miles on it and I'm still using 15w40 Dino oil. The previous owner said he ran 15w40 and changed between 5,000 to 7,500 miles. Everyone here recommends 5w40 Full Synthetic. So far, cross my fingers, I'll be good.
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Josh