tcp2

Yup. I actually ran 4.4l of 0w40 with 2l of 0w20 mixed in over the last part of the winter (feels like it's over early this year). Both castrol synthetic. It ran really well and started perfectly even in the cold.
A week ago I changed the oil out for a "summer" fill, petro canada duron 5w40.

I had a couple of 4l jugs on hand and figured it would work fine in the warmer weather and while towing our travel trailer. Runs incredibly quietly and starts without so much a clatter. I use FL820s filters only.

Even with the 0w20/0w40 mix (january to march), i could just hear a little bit of ticking after a hard highway drive that got the oil up to temperature, just off idle. slight phaser tick, but I'm always listening for it. That is completely gone at any time with the Duron.

I have 1.5 jugs of castrol 0w40 waiting for the fall oil change. Going to run that through the next winter.

ford4wd08

It does.... But at a much higher price than what you can buy quarts for at Walmart.

MHOWELL34

It's at walmart, but is sold out long before you can get there! lol

tritonbullet

Yay or nay??

vintageman

I have a Silver with two-tone grey at the bottom and grey bumpers, I was actually thinking of doing black plastidip on the bumpers and the lower panels as well as my stock fender flairs. I say go for it, if you use plastidip, you can always peel it off if you don't like it. Let us know and post pics if you do it.

tcp2

Unless that's used oil along the bottom of the truck, you're in the wrong thread. Start a new one of your own.

tritonbullet

MHOWELL34

Drained out my 2 day old Motorcraft 5w 20, why? Because its pure garbage. It made my truck idle like ****, everything shook, oil pressure dropped. And brand new phasers started ticking.
Attachment 570171

So i bit the bullet and said get the hell out of my engine
Attachment 570172

Fixed it with some 6qts of High mileage Valvoline 5w 30 and a quart of lucas
Attachment 570173

Tick is almost silent now, and doesnt vibrate idling. **** that water koolaid in that death jug


Hot Idle Oil Pressure on MC 5w20
Attachment 570174

Hot Idle Oil Pressure on Valvoline 5w30 + Lucas Oil stabilizer
Attachment 570175

I think i know what i will be sticking with...

screamineagle

Great post! Your oil pressure gauge is proof that 20w does not belong in these engines. A few on here (myself included) have tried to convince people that 30w is best for our trucks. Hopefully your post will open some eyes and save a few 5.4 3v engines from an early death!

MHOWELL34

Yea i suppose. I was upset with that 35 dollars wasted. Well 4 or so was for the filter, it stayed on lol. But i was not going to treat my brand new parts that way. I ran 5w 20 Schaeffers and it was thicker than that or had a better oily texture.