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05-21-2019, 05:43 AM
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#1
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Montana Fan
Join Date: Nov 2017
Location: Appling
Posts: 176
M.O.C. #20840
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Full Synthetic Oil
Curious as to how many of you are running full synthetic oil in your tow vehicle and what your approximately mileage change interval is? Based on Ford's recommendation I think that we all (Ford owners) should be...
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Wayne & Karen
2017 3791RD, MORryde SRE4000 w/ X Factor
2017 Ford F350 Lariat, CC, LB, PSD, DRW, 4WD, Curt Q24
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05-21-2019, 07:16 AM
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#2
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Established Member
Join Date: Sep 2017
Location: Camden
Posts: 40
M.O.C. #20575
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I use the Rotella T6 synthetic and change every 7,500 give or take a couple of hundred and change the fuel filters every third oil change.
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Goose
2017 Montana 3791RD
2017 Ford F-350 SRW
PullRite SuperGlide 24K
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05-21-2019, 08:26 AM
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#3
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Montana Master
Join Date: Nov 2018
Location: Menifee
Posts: 1,109
M.O.C. #22986
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Quote:
Originally Posted by Goose
I use the Rotella T6 synthetic and change every 7,500 give or take a couple of hundred and change the fuel filters every third oil change.
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+1
I have a Chevy but, I buy the oil from Walmart 2.5 gal, for 50$ and do it myself. Installed a futomo valve. I change the filter every change cheap insurance.
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2018 3920fb 2020 GMC Denali 3500 4x4 Duramax, 10 speed Allison. LB SRW, Firestone air bags with Airlift wireless onboard compressor. Anderson Ultimate Hitch. MX4 folding cover. 50gal titan in bed transfer tank. Onan 6500 lp genset installed by me ! Had: 2 HF 3500 Inverters with Parallel Kit
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05-21-2019, 10:01 AM
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#4
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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Quote:
Originally Posted by Goose
I use the Rotella T6 synthetic and change every 7,500 give or take a couple of hundred and change the fuel filters every third oil change.
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This is EXACTLY what I do.
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2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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05-26-2019, 07:49 PM
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#5
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Seasoned Camper
Join Date: Dec 2018
Location: Peru
Posts: 85
M.O.C. #23153
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Quote:
Originally Posted by WeBeFulltime
This is EXACTLY what I do.
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We do the same. What viscosity do you Use? I'm using a 5w 40ish something. I thought the interval for fuel filters is every oil change.
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05-21-2019, 07:39 AM
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#6
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,159
M.O.C. #6433
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I have never used synthetic oil. Oil changed at 5,000 miles. And between DW and myself well over a million miles driven and never an engine failure on any vehicle except a seized bearing on a 1978 Chevy LUV 4 banger pickup at 150,000 miles. And I drove that one hard. See no need for synthetic.
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Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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05-21-2019, 08:22 AM
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#7
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Montana Master
Join Date: Jul 2010
Location: Lake Havasu City AZ.
Posts: 1,811
M.O.C. #10552
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I use Ford oil and have it changed at a Ford dealer. It I am doing a lot of towing at about 5000 or so miles. If not towing at about 7500 miles and change filter every time.
Is’s Got 52000 miles on it and time for the trans oil to be changed sand the trans to be serviced. Fuel filters every 20000 miles or a bit less.
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Wayne and Ann Moore
2015 Ford F-350 King Ranch
Firestone air bags, bed saver.
Add 40 GAL tank in bed.
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05-21-2019, 08:39 AM
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#8
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Montana Master
Join Date: Mar 2016
Location: Catoosa
Posts: 778
M.O.C. #18384
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It's my understanding that it's the fuel injectors which are operated under very high pressure from the engine oil and are very sensitive to clean oil with excellent lubriciticy that benefit from the use of synthetic oils. Because of the extremely high cost of repairing the fuel injection components vs. the small cost increase of using synthetic oils, I feel it's money well spent.
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2015 3100RL legacy...2005 Ford F-250 CC SB. Tows like a charm! 4/19 Updated to 2017 Chevy 3500 CC SB SRW -hope it tows as well as my F 250 did!
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05-21-2019, 08:40 AM
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#9
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Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,547
M.O.C. #2283
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I run Mobile 1 and change when Ford says I should. They built the truck and knows better than I do.
Synthetic is better oil no question. Is it really necessary, that is debatable. It is better for your turbo and your engine is better protected but the engine will outlast the rest of the truck anyway so why bother.
Just be sure you get what is recommended for your truck. Read the owners manual and the label on the oil and be sure it’s recommended. If not the warranty may not cover the engine.
Lynwood
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05-21-2019, 08:59 AM
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#10
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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We change the oil every 5,000 miles with good quality regular oil and change the filters every other time. The truck is pretty much only for pulling however so I don't stretch the miles because that works out to about every six months.
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Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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05-26-2019, 03:08 PM
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#11
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Established Member
Join Date: Oct 2017
Location: Sanger
Posts: 46
M.O.C. #20773
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Quote:
Originally Posted by mlh
I run Mobile 1 and change when Ford says I should. They built the truck and knows better than I do.
Synthetic is better oil no question. Is it really necessary, that is debatable. It is better for your turbo and your engine is better protected but the engine will outlast the rest of the truck anyway so why bother.
Just be sure you get what is recommended for your truck. Read the owners manual and the label on the oil and be sure it’s recommended. If not the warranty may not cover the engine.
Lynwood
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Mobil one will not meet Fords new standards, also Full Synthetic is not 100% synthetic. Still a good product.
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05-26-2019, 04:10 PM
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#12
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Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,547
M.O.C. #2283
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Quote:
Originally Posted by Eddiea
Mobil one will not meet Fords new standards, also Full Synthetic is not 100% synthetic. Still a good product.
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Thanks
This is correct Mobil 1 does meet Ford’s latest WSS-M2C171-F1. Specifications. It doesn’t have enough phosphorus in it allowing some engine parts to wear prematurely.
Oil will last forever but the additive package in it doesn’t and the long string of molecules in it break down. When that happened the oil becomes too thin. It’s best to go by the manufacturers recommendations. After all they are the guys that built the engine.
Lynwood
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05-21-2019, 09:23 AM
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#13
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Montana Master
Join Date: Jun 2018
Location: Folsom, California
Posts: 552
M.O.C. #21903
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We have 2005 F250 6.0 diesel. Purchased it from original owner when we got Montana from him, truck had 110,000 miles on it at that time. He kept a log of all work done on truck since new. He changed dino oil and filter every 3,000 miles. He changed to Rotella T6 full synthetic at around 90,000 miles and extended oil change interval to 5,000 miles.
Truck now has 145,000 miles on it. About 15,000 miles ago, I sent oil to Blackstone for analysis. They said engine is in great shape, and I could extend change interval to 6,000 miles.
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'05 F250 6.0 Bullet Proofed - Sold
'17 F350 6.7 Lariet
'02 Montana 3280RL Upgraded a bunch.
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05-26-2019, 02:32 PM
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#14
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Montana Fan
Join Date: Jun 2015
Location: Cedar Park
Posts: 135
M.O.C. #17531
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Quote:
Originally Posted by Hblick48
We have 2005 F250 6.0 diesel. Purchased it from original owner when we got Montana from him, truck had 110,000 miles on it at that time. He kept a log of all work done on truck since new. He changed dino oil and filter every 3,000 miles. He changed to Rotella T6 full synthetic at around 90,000 miles and extended oil change interval to 5,000 miles.
Truck now has 145,000 miles on it. About 15,000 miles ago, I sent oil to Blackstone for analysis. They said engine is in great shape, and I could extend change interval to 6,000 miles.
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That's good news. I have the 2006 F250 6.0 diesel with 126,000. Since I bought it in 2006 I've changed oil every 5000 with regular Mobil 1 Delvac. Been great so far.
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05-21-2019, 10:08 AM
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#15
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Montana Fan
Join Date: Jan 2019
Location: Sun City
Posts: 408
M.O.C. #23256
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Uh-oh, another oil thread...
I run full synthetic... Not sure about intervals since I haven't had the truck that long yet. From what I've read on the Cummins forum, the interval on the 6.7 with synthetic seems to run between 7500-10000.
And then there the whole other debate about miles vs. months..
This is my first diesel, and I just know that I was very surprised at how quickly the oil gets black again after an oil change.
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Dave in AZ
2008 Montana 3400RL
2008 Dodge Ram 3500 Diesel Dually
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05-21-2019, 10:16 AM
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#16
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Montana Master
Join Date: Nov 2018
Location: Menifee
Posts: 1,109
M.O.C. #22986
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The oil in a diesel gets dirty as soon as you start it lol.
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2018 3920fb 2020 GMC Denali 3500 4x4 Duramax, 10 speed Allison. LB SRW, Firestone air bags with Airlift wireless onboard compressor. Anderson Ultimate Hitch. MX4 folding cover. 50gal titan in bed transfer tank. Onan 6500 lp genset installed by me ! Had: 2 HF 3500 Inverters with Parallel Kit
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05-21-2019, 11:43 AM
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#17
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Montana Master
Join Date: Apr 2006
Location: Mesa az
Posts: 2,945
M.O.C. #5651
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Apparently I am in the tiny minority. I use what ever the Chevy dealer installs (forget the brand) and run 10,000 miles between changes. I think Diesel place forum had people say just use what the console says, and I have. Old truck had 130,000 when I traded and this one has 90,000 so far.
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Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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05-21-2019, 12:00 PM
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#18
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Montana Fan
Join Date: Jan 2019
Location: Sun City
Posts: 408
M.O.C. #23256
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Quote:
Originally Posted by twindman
Apparently I am in the tiny minority. I use what ever the Chevy dealer installs (forget the brand) and run 10,000 miles between changes. I think Diesel place forum had people say just use what the console says, and I have. Old truck had 130,000 when I traded and this one has 90,000 so far.
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The previous owner went 10K between changes or once a year, whichever came first. I may do the same. Unless the console says to do it sooner...
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Dave in AZ
2008 Montana 3400RL
2008 Dodge Ram 3500 Diesel Dually
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05-21-2019, 12:28 PM
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#19
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Montana Master
Join Date: May 2016
Location: Cuyahoga Falls
Posts: 699
M.O.C. #18572
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I have a 2016 F350 with the diesel. Bought it new in 2015. The dealership I purchased from gives 10 years free oil changes. Ford uses a synthetic blend and I get the oil changed 3 times a year regardless of mileage. At their rate of $92.00 for an oil change, I am saving $2760.00.
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ATC/NAC Jerry A. Burkholder, USN (RET.)
Rule #1. The Chief is always right.
Rule #2. When in doubt, refer to rule #1.
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05-21-2019, 02:10 PM
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#20
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Seasoned Camper
Join Date: Oct 2017
Location: Blossvale
Posts: 59
M.O.C. #20684
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I have a 2013 F250 6.7l diesel and have used synthetic since the first oil change. T6 Shell Rotella and the oil change reminder comes up every 7200 to 7500 miles. I did use Amsoil once, but the directive was to change the oil when the reminder came up. I found that I only got 7500 miles on an oil that was supposed to last 25k. So, for reasons of price, I started using T6 with no regrets and have been satisfied ever since.
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