15w40 use cautions - engine builder discussion
Cargo Master
Joined: Feb 2020
Posts: 2,277
Likes: 949
Why did you install an aftermarket intercooler pipe? The one that came with your engine was designed for it.
Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 119
From: Tallassee, ALabama
Apples and oranges. No correlation between the two. Try again.
Thread Starter
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Hotshot
Joined: Jul 2013
Posts: 14,306
Likes: 2,198
I use 15W40 during summer.
winters get down to 5 degrees so its 5W40 time
Cargo Master
Joined: Feb 2015
Posts: 2,338
Likes: 255
From: Livermore Ca.
My CAC pile is prone to failure but my oil isn't.
Cargo Master
Joined: Feb 2020
Posts: 2,277
Likes: 949
Sure. And I'm all for folks upgrading components whenever they want. I'm sure there are worse oils out there than Motorcraft but I also think there are better ones. If you want to run Motorcraft, that's cool with me but please don't berate me for choosing to run something else. Have a good one 
Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 119
From: Tallassee, ALabama
No one has berated you for wanting to run something else. Again, you have misread all that has been written. The issue was, the Schaeffer oil you wanted to run is not on the Ford Approved CK-4 list.
This statement sums it all up in a nutshell....
Schaeffer might say it meets Ford's specs, but till it makes the Ford Approved CK-4 list, most would not use it.
The end.
This statement sums it all up in a nutshell....
Schaeffer might say it meets Ford's specs, but till it makes the Ford Approved CK-4 list, most would not use it.
The end.
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Tuned
Joined: May 2019
Posts: 279
Likes: 14
From: Brookings, SD
Outsider looking in here, but it seems that everyone needs to take a step back and put their egos aside.
Hotshot
Joined: Oct 2006
Posts: 10,191
Likes: 8,082
From: Texas
if it is YOUR truck, and YOU are buying the oil.........run what YOU want........it makes no difference what someone else runs and pays for.
Cargo Master
Joined: Feb 2015
Posts: 2,338
Likes: 255
From: Livermore Ca.
Here is the STUPID question that has been asked to death. Which oil can I run in my truck? and the answer is as simple as the look on peoples faces. I didn't berate anyone but come on man. The same question keeps coming up and I keep giving the same answer. It's a no brainier and you don't have to ask if its ok to use in your truck. It makes no sense to keep asking the same question.
Tuned
Joined: May 2019
Posts: 279
Likes: 14
From: Brookings, SD
Here is the STUPID question that has been asked to death. Which oil can I run in my truck? and the answer is as simple as the look on peoples faces. I didn't berate anyone but come on man. The same question keeps coming up and I keep giving the same answer. It's a no brainier and you don't have to ask if its ok to use in your truck. It makes no sense to keep asking the same question.
You aren't helping your cause here really. Now I'm not involved with the whole ck4 cj4 Schaeffer debacle, but I'd say again that I think all involved need to step back and chill out. Getting bent out of shape about a question that wasn't asked is just pointless.
Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 119
From: Tallassee, ALabama
I haven't gotten bent out of shape over the Schaeffer debacle. I only tired to inform the one who did get bent out of shape that it might not be on Ford's current list and it isn't CJ-4 oil in the jug, etc.
Tuned
Joined: May 2019
Posts: 279
Likes: 14
From: Brookings, SD
Wasn't referring to you with the bent out of shape bit.
More Turbo
Joined: Dec 2018
Posts: 535
Likes: 23
From: Arkansas
I'm still amazed the most basic threads, usually in regards to oil, get the most traffic, makes sense. What I cannot understand, is who gives a ****, I personally used to run and am still considering running Lubrication Engineers oil in my 6.7's. The only draw back is it's $38 or so a gallon, kind of expensive to say the least. I was considering switching to triax or something, but I'm unsure if it's worth a ****.