Another Oil Question.
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Laughing Gas
Joined: Jul 2008
Posts: 772
Likes: 27
From: Brighton CO.
Another Oil Question.
Trying to decide if a when I'll change to SYN.
At what milage did you guys decide to change or to full synthetic?
Once you have gone full SYN, have you seen any changes? (Milage, longer runs between changes, quite, etc)?
I have just under 15K on mine right now and almost ready for a oil change. I haven't decided to swop over yet or not. Will start towing the 5er for the spring summer soon so I need to make a decision really soon.
I also just checked with the local dealer on pricing for the 1 gallon jugs of Motorcraft 5w-40 full SYN. $54.71 a jug. I know I can run other brands. I was just posting prices for others to see.
As always,
Thanks in advanced.
Brice
At what milage did you guys decide to change or to full synthetic?
Once you have gone full SYN, have you seen any changes? (Milage, longer runs between changes, quite, etc)?
I have just under 15K on mine right now and almost ready for a oil change. I haven't decided to swop over yet or not. Will start towing the 5er for the spring summer soon so I need to make a decision really soon.
I also just checked with the local dealer on pricing for the 1 gallon jugs of Motorcraft 5w-40 full SYN. $54.71 a jug. I know I can run other brands. I was just posting prices for others to see.
As always,
Thanks in advanced.
Brice
Super Moderator
Joined: Aug 2008
Posts: 37,379
Likes: 1,862
From: Frederick, MD
I get my oil generally from Walmart. They also stock the M/C oil filter.
Depending on temps I run MC 15-40wt
Rotella T6 5-40 in the winter.
Motor does not care of you go back and forth.
Depending on temps I run MC 15-40wt
Rotella T6 5-40 in the winter.
Motor does not care of you go back and forth.
Posting Guru
Joined: Dec 2015
Posts: 1,040
Likes: 9
5W40 all year. I buy it on sale and take it to the dealer. They charge for filter and labor.
No reason to run 15w40 just because we used to; things have changed over the years.
I switched at my 5000 mile oil change and now change it when the OLM tells me to.
No reason to run 15w40 just because we used to; things have changed over the years.
I switched at my 5000 mile oil change and now change it when the OLM tells me to.
Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 84
I switched to Rotella T6 at 50,000. I ran Motorcraft 15w-40 before that. I should have switched sooner, I just didn't. I run it about 7,000 miles. If I ever get a new truck, I'll probably switch as soon as the factory fill is dumped.
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
First oil change I went to Valvoline Premium Blue Extreme 5w40. That's all I've been running since. That's what I ran in my old truck for years.
As mentioned, the engine doesn't care when you switch. These aren't the old days when synthetics didn't play nice with gaskets and seals and whatnot.
As mentioned, the engine doesn't care when you switch. These aren't the old days when synthetics didn't play nice with gaskets and seals and whatnot.
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Lead Driver
Joined: Feb 2005
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From: The Great State of Texas
Why do you prefer T6 over Motorcraft oil? Or is it the weight your prefer?
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Thread Starter
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Laughing Gas
Joined: Jul 2008
Posts: 772
Likes: 27
From: Brighton CO.
Hey, Thanks for the responses.
I haven't done anything yet. I bought MC 10/30 SDDO from Wally tonight for just under $18.00 a gallon jug. I know it's the standard oil but I'm figuring I'll have another oil change before i start towing the 5er through the mountains during the heat of the summer. I'll probably switch over to SYN then.
I've noticed on some folks switch between SYN and standard. I though once you change over to full SYN you shouldn't change back and fourth? Is this true?
I can see good reasons to change over to T6 though. I've seen T6 ****ting on the shelf in a lot of places but I can't say that about MC.
I haven't done anything yet. I bought MC 10/30 SDDO from Wally tonight for just under $18.00 a gallon jug. I know it's the standard oil but I'm figuring I'll have another oil change before i start towing the 5er through the mountains during the heat of the summer. I'll probably switch over to SYN then.
I've noticed on some folks switch between SYN and standard. I though once you change over to full SYN you shouldn't change back and fourth? Is this true?
I can see good reasons to change over to T6 though. I've seen T6 ****ting on the shelf in a lot of places but I can't say that about MC.
More Turbo
Joined: Aug 2009
Posts: 551
Likes: 19
https://mobiloil.com/en/promotion/mo...nd-mobil-super
Its not something I have ever used, but this is a heck of a deal.
Its not something I have ever used, but this is a heck of a deal.
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 25
From: Middle Tn.
Hey, Thanks for the responses.
I haven't done anything yet. I bought MC 10/30 SDDO from Wally tonight for just under $18.00 a gallon jug. I know it's the standard oil but I'm figuring I'll have another oil change before i start towing the 5er through the mountains during the heat of the summer. I'll probably switch over to SYN then.
I've noticed on some folks switch between SYN and standard. I though once you change over to full SYN you shouldn't change back and fourth? Is this true?
I can see good reasons to change over to T6 though. I've seen T6 ****ting on the shelf in a lot of places but I can't say that about MC.
I haven't done anything yet. I bought MC 10/30 SDDO from Wally tonight for just under $18.00 a gallon jug. I know it's the standard oil but I'm figuring I'll have another oil change before i start towing the 5er through the mountains during the heat of the summer. I'll probably switch over to SYN then.
I've noticed on some folks switch between SYN and standard. I though once you change over to full SYN you shouldn't change back and fourth? Is this true?
I can see good reasons to change over to T6 though. I've seen T6 ****ting on the shelf in a lot of places but I can't say that about MC.
Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 84
The primary reason I switched was I wanted to use full synthetic, the motorcraft oil I was using was not. I could not find full synthetic motorcraft diesel oil locally. I selected T6 because of various recommendations here by members over the years. For the southern states, 15w-40 is typically fine which is probably true for TX as well, except for the rare multiple days below freezing and single digits like in 2014. At least with 5w-40 I don't have to think about it but weight doesn't add much to the decision for this area.
Lead Driver
Joined: Feb 2005
Posts: 7,928
Likes: 2,644
From: The Great State of Texas
The primary reason I switched was I wanted to use full synthetic, the motorcraft oil I was using was not. I could not find full synthetic motorcraft diesel oil locally. I selected T6 because of various recommendations here by members over the years. For the southern states, 15w-40 is typically fine which is probably true for TX as well, except for the rare multiple days below freezing and single digits like in 2014. At least with 5w-40 I don't have to think about it but weight doesn't add much to the decision for this area.
Thanks....
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