the 4.7 is no more of a sludge engine(to anyone except for internet trolls) than the olde 5.x series magnum engines please stop spreading inaccurate information(but thanks for he google hits on that one).

also if you are going to claim sludge i want PROOF, in the form of pictures, i have only ever seen 1 4.7 that was actually sludged out of the dozens that have been diagnosed with it, it is the #1 thing people misdiagnose in this day

also letting an engine warm up in the winter before driving it (at idle) is bad for the engine, the environment, and most importantly your wallet, i dont do it, and neither do most of my friends after it been explained to them. The ONLY thing warming the engine up does it make the cabin warmer faster or melt ice/snow on the windshield when the car is covered in it.(thats actually the ONLY time i warm mine up is when i have to clean snow off it)

yes on snot in the cap being NORMAL(to a certain extent)

yes on the dipstick being a way to gauge if you have a moisture/headgasket problem (if its milky)

NO on tasting the build up on the cap or dipstick, thats just asking for problems (im no doctor, but im sure they would tell you the same thing)

 

+1 shrp

My advanced medical degree I have tells me tasting antifreeze and oil cleans out your body REALLY well! Side effects: Vomiting, Lightheartedness, Fainting, in some cases even death lol

 

sweet, we got a doctor in the group . . .

 

I wish I was!

 

Just in case anybody having this problem with their 4.7 is interested.

https://dodgeforum.com/forum/parts-s...ller-tube.html

 

My truck(not a Dak, nor does it have the 4.7 lol) Gets that build up often living in nw montana(often going from sub zero to 30 above in 24hrs..) Also as a side note.. try and find another place besides Jiffy lube. I have heard nothing but bad about them. I change my own oil and do all my own work, but if i couldnt id rather spend a few bucks more and go to a quality place.

 

How exactly is it bad, do explain?

Antifreeze is very poisonous why would you put it in your mouth?

 

cause it looks like juice? idk lol.. i wouldnt on purpose(have accidentally workin on my ram more than once)

 

i wouldnt put antifreeze in my mouth,



why is it bad to let your truck warm up (warming up is actually left over from the days of carburettors which would not atomize the fuel properly when they were cold, this required warming up the engine, modern electronically fuel injected cars do not face this issue)

1) waste gas (at idle your truck gets 0 miles per gallon of fuel burned, the reduction in mpgs while you are warming it up but driving is still better than 0)
2) engines run rich when they are cold (this is the computers attempt to warm them up faster, it works, but also emits alot more pollution)
3) the catalytic converter works best when it is warm, it warms up from exhaust gases, running at idle (ok, just above idle when its cold) gives off relatively LOW exhaust gas temperatures hence warming up the CAT more slowly, making it work harder and less efficiently, and less effectively.
4) this can cause the cat to become plugged over time (not right away of course, but over time if you do this alot it will happen)
5) engines warm up faster when being driven GENTLY (dont go and stomp on the gas immediately, wait for the water temp to come up)
6) rich burn leaves more deposits in the engine (carbon build up ect) this fouls plugs and causes a general loss of efficiency in the engine over time.
7) rich burn leaves fuel behind to mix with the oil in the crankcase, diluting the oil and making it less effective


now you do need to wait long enough for your oil pressure to come up however that is maybe equivalent to the time it takes to put on your seat-belt, and at that point you should be good to go.(maybe a minute at most)



sources :

http://www.abc.net.au/science/articl...27/2044311.htm
http://www.popularmechanics.com/cars/how-to/4213313

 

I have to agree here.

Aside from people posting things on the internet, I've never seen a credible source claim the 4.7 has sludge issues. I even looked up the "official" list of sludge engines and this one is not on it. But any engine can be, as long as you don't change the oil...