6.4 DPF deleted, what oil!? - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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Old 05-15-2014, 04:23 PM
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6.4 DPF deleted, what oil!?

So I'm coming up on my oil change time again and I'm done letting the dealer touch that part. They run the 15w40 oil. So I've been looking for this all day and haven't really found a complete answer. What oil do you guys prefer, and why? All the answers I've found beat around the bush. Thanks in advanced!
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Old 05-15-2014, 06:23 PM
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You can search and find this topic debated a lot. Personally I run Rotella T6.
1) my oil analysis come back good when using compared to the motocraft 15w40
2) its synthetic so all advantages vs traditional oil apply
3) find it locally at wal mart for best price
4) 5w40 offers heavy duty protection and easy cold starting
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Old 05-15-2014, 06:55 PM
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Good deal. I've heard mixed things about Rotella and Lucas. Is T6 cj-4?
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Old 05-15-2014, 07:16 PM
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Quote:
Originally Posted by TwinTurbo6.4 View Post
Good deal. I've heard mixed things about Rotella and Lucas. Is T6 cj-4?
Yes it is. I like Rotella T6 myself but I run Mobile 1 Turbo Diesel 5w-40
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Old 05-15-2014, 07:22 PM
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I'm thinking I'm gonna run Rotella T6 this round, then try lucas and get the reports on both to see what I come up with. Thanks for the opinion guys!

Edit:
Also, another reason to do it yourself.. I just got oil, oil filter, and 2 fuel filters and saved $200 as apposed to going to the dealership to have them do it.
pops250 and sabarnes like this.

Last edited by TwinTurbo6.4; 05-15-2014 at 08:14 PM.
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Old 05-15-2014, 09:03 PM
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I run T6 as well...


Sent from AutoGuide.com App
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Old 05-16-2014, 06:50 AM
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T6 on my 6.0 for 2 years, and now on my 6.4. Love the rebates and price for Rotella T6.
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Old 05-16-2014, 10:35 AM
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I run Valvoline Premium Blue Extreme 5w40. Always ran it in my 6.4L and have always ran in it in my 6.7L. It's a little pricey but after seeing under the valve covers on my 6.4L and how clean it was while using this oil, I'll always run it in my trucks.
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Old 05-16-2014, 01:45 PM
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Amsoil 5w40 is the only thing I use in mine. I was using Amsoil 15w40 but I get a little bit better mpg with the 5w40. Also you could be using the best oil in world but if your oil filter isn't catching the dirt it doesn't matter. You have to use a good filter. It's better to use a good filter and OK oil vs the other way around. I only change my oil once a year and with oil analysis I can normally go longer.

Last edited by Delta Kilo; 05-16-2014 at 01:48 PM.
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Old 05-16-2014, 01:56 PM
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Quote:
Originally Posted by Delta Kilo View Post
Amsoil 5w40 is the only thing I use in mine. I was using Amsoil 15w40 but I get a little bit better mpg with the 5w40. Also you could be using the best oil in world but if your oil filter isn't catching the dirt it doesn't matter. You have to use a good filter. It's better to use a good filter and OK oil vs the other way around. I only change my oil once a year and with oil analysis I can normally go longer.
I agree. I won't run anything other than motorcraft filters. The oil system was built around that brand.
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