Oysters Roverfeller followed by large ocean bugs w/one pound tail from NZ.

 

Oil that has been run for 5 minutes will still be clean looking, so the additive was definitely breaking gunk loose.

The debris in your oil could be many different things. My first thought is that if you have the original oil pump, it could be broken and slowly grinding itself to bits, which is common in these trucks. But it could even be chunks of crud that had congealed in your engine. I'd watch for the next oil change and see what's comes out.

 

...thanks Dr. Mordo! it sure did break gunk loose, I've been monitoring how the oil looks after that oil change, and when I take the dipstick out, it still looks very clean, compared to what came out after using the additive. I'm still 25 hundred miles 'till my next oil change, so I've got a long way to go until it turns dark. As per the metal particles, for sure something is grinding inside there, what might exactly be? dunno, if it is the oil pump, well I hope is a very, very slow grinding. We'll see on my next oil change, and thanks again for your thoughts! ;-]#

 

adolfojbonilla- I too suffer from the leaky valve cover gaskets and was planning on replacing and cleaning rockers. What did you use to clean the rockers?

 

...matt3502, I was initially told to use brake cleaner, did and cleaned them pretty well, or so I thought; then a friend that works with A/C's came along during the process, and us being from Venezuela, reminded me about the "acid baths" that mechanics down there give to engine parts, and told me it wasn't "acid", but it actually was "Cresol" (https://en.wikipedia.org/wiki/Cresol).

So off we went to a local hispanic supermarket down here in SoFla, and found the product "Rex Creolin". bought a couple of bottles and soaked the rockers, or whatever you need in them, the longer the better. Look for my "The rocker assembly cleaning situation" post, you'll see the "before and after" pics with brake cleaner, and later with "Creolin", it was astonishing; I soaked them for a day, I had no rush.



Just beware of the smell, "Creolin" has a very peculiar sweet strong odor that sticks to you, so do it outdoors, far away from the wifey, and with clothes you are willing to dispose off later.

I wished my rocker covers were transparent so I could show them off! ;-]#

Good Luck!

 

When I do auto work I wear an old pair of my USMC cammies. The Commander in Chief would be delighted to see them disappear.

 

Adolfo- I just looked at your pictures: HOLY CRAP!! what a difference. Another question for you. The plate which is in one of your pictures next to the rocker covers, I assume it came out of the cover, the fill port side. How is it attached? I wonder if that is part of my ticking noise, as in it has worked itself loose. Great work by the way.

 

...matt3502, the plate you mentioned exists in each rocker cover, and each are fastened by eight small screws -if I remember correctly. These came out without prob, maybe one or two gave a bit of hell, so when removing them just make sure you position the cover firmly in a way you may press the screw from above. I used an electric screwdriver to get them out, just make sure to use the right tip. Threw those little suckers in a small cup filled with brake cleaner, and left them there throughout the cleaning process.

A new toothbrush or another type of nylon hair brush will be of great help to brush away all gunk, if you really want to get the covers, and the rockers themselves, pretty "spic-span" cleaned.

On the rockers, it was important to use brake cleaner to blow out all gunk inside the little holes where the rods get fitted against, also inside openings of the shaft itself and the through the small openings by the springs, wear goggles and keep mouth close, this will be a "blast and awe" moment.

So my recommendation, having gone through all that process, is to buy a cheap big enough plastic litter box to put everything in; pour at least 6 bottles of "Rex Creolin", or the necessary to cover them all, if not you will see yourself flipping them over like steaks onna grill; make sure to identify the rocker shafts well, left from right, bolts too, just in case -I secured a tie-wrap on the right one, and bundled the corresponding bolts with a tie-wrap too; after soaking them for 24hrs -I had no hurry, these came out pretty cleaned and that's when the brush comes handy, to remove the softened out gunk; use a lot of brake cleaner to blow all gunk out of every hole, you'll get excited when seeing how clean it's coming out, so this is the moment when you want to have your goggles, and mouth shut.

I received a good piece of advice, try not to mess with the pushrods. If I recall correctly the following was the tip given: if not being careful, these might move and if existing suction between the rods and the lifters were lost, these might fall and give you headaches to put lifters back in place. So carefully hold the rods in place when separating each rocker from it. Might sound scary, but is not, so hold the rod in place and tip each rocker to the opposite side, away from the rod, easy.

This job was my first "major repair", I was scared of things going south pretty quick, but manned-up and got through, felt great when truck started and sounded great!

 

So after reading this post a few weeks ago I decided to take the plunge today. I followed the MOTOR MEDIC directions to the letter (except for taking off Oil pan). Poured in bottle, ran engine from cold for 5 minutes. The oil in the beast had about 3500 miles on it but the main focus was to see if I could get rid of a ticking sound under the valve cover.
A local indie mech agreed that MM plus a quart of RISLONE might clear out some of the crap that is cloggin up the oil dispersment in the valve area. Tick was pretty nasty and went away with a small increase in RPM's from idle.
I would swear that the oil that came out of the pan was West Texas intermediate crude it was so black and on the thick side.
I put in 15-40 with one quart being substituted with RISLONE. The ticking has decreased noticeably. My plan is to run this combo for 500 miles and do the whole thing again.
Thanks to adolfojbonilla for this detailed thread.

 

I should probly do the same thing. Maybe it'll clear up some of the ticking in my top end.