Here is some basic info on caring for your 6.0L truck.

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Click on the 6.0L label and watch the "lead-in" video until the end (or click on the "right arrow" to take you to the end). At that point, you will have a menu of things to choose from.

One item to note is the oil information. When you click on it, you will see an oil application chart about 30 seconds into the video. In that chart you can see what Ford has to tell us about the 5W40 temperature "range of application". It says -20*F to over 100*F. This was a question awhile back (ie whether or not Ford actually acknowledged the use of 5W40 in this wide of a range).

 

Excellent info! Thanks Mark.

 

Good find, Mark.

I noticed on fuel filters, they are saying KOEO for 30 seconds, 6 times. First time I've heard that many times recommended. It's usually 3 or 4. More is better, can't hurt.

 

Another good find Mark. I do have to say I am a little curious about what the KOEO for 30 seconds six time might do to the FICM and injectors. Does anyone think it might put a little strain on them?

 

I have always done the koeo 2 or 3 times and it has always fired right off with zero misses.

 

^^ Same here. In the FF video, at the end it shows 2 filters side by side. Is the one on the left for E-series upper? It doesn't have the aquabloc membrane that the HFCM SHOULD have. Just curious.

 

Actually the 5W40 chart indicates a maximum of 100*F and the 15W40 exceeds 100*F, which makes be believe that the 15W40 has more margin in the hot summer months.

 

Great info thanks

 

Look at the chart again. It helps to pause the video on the chart.

The bars for 15W40 and 5W40 both end with arrows on the right side, indicating the acceptable application continues toward the right and higher temps.

The bars for 10W30 and 0W30, both end square. Meaning the end of the acceptable range.

I know the 15W goes a little farther right than the 5W. I don't know why, and it doesn't make sense to me. They are both 40 weight base stocks, and it's well known that synthetic withstands heat better than conventional. I can't guess why they slanted the chart toward 15W like they did.

 

If a 40 weight base stock should perform at the same maximum temperature, then tell me why the 0W40 maximum temperature rating is 50*F?

The 5W40 has an upper limit of 100*F and the 15W40 exceeds 100*F which again tells me the 15W40 has more high temperature margin for this particular engine.

Just trying to call a "spade a spade"!

 

Good points, and I don't know why they do that.

 

Here is a link to the Motorcraft 5W-40 synthetic product page, where they recommend it for all Powerstrokes:
http://www.fcsdchemicalsandlubricant...gory=Motor Oil

"Motorcraft® SAE 5W-40 Full Synthetic Diesel Motor Oil is recommended for use in Powerstroke® diesel engines over a wide temperature range, from -20°F (-29°C) to over 100°F (38°C)."

and for comparison, here is the page for 15W-40:
http://www.fcsdchemicalsandlubricant...gory=Motor Oil

 

"Motorcraft® SAE 5W-40 Full Synthetic Diesel Motor Oil is recommended for use in Powerstroke® diesel engines over a wide temperature range, from -20°F (-29°C) to over 100°F (38°C)."

Sure does (+100*F)...

 

Well said - the arrow is there for a reason.

 

Actually, neither is a 40-weight base stock. The first number in the "weight" is the base stock, not the second.

Multi-weight oils use hydrocarbon-polymer chemistry to "stretch" the base weight to the second weight. And with all other things being equal, a 15-weight oil performs better in high temperatures than a 0-weight or 5-weight oil.

Now, given that synthetics (supposedly) perform better than conventional oils, some of this is no longer current. (i.e. things are not equal).

But what I was told, way back when, was that older 10w40 oils were poor oils to use because the (then) current base oils weren't of sufficient quality to be "stretched" to a 40-weight oil. That's probably why 20w50 oils had some brief popularity in automotive engines in the late '80's and 90's.

These days, better quality base stocks allow 15-weight oil to be "stretched" with little difficulty. And synthetics allow 5-weight group-IV (the latest group?) base stocks to be stretched without harm. But in super-high-heat applications (such as in the American Southwest (AZ, NM, SoTX, SoCA), where daytime ambient temps in summer can exceed 120 degrees), a 15-weight base stock oil will probably perform better in most scenarios, especially those where the truck's owner is somewhat less than OCD on maintenance.

-blaine