Jboyette is correct. You could also use [http://www.auto-rx.com/index.html Auto-RX] to help with Sludge Issue's. I've heard nothing but good things about it. Good Luck and Remember.
Change Your Mind, Not Your Oil.
Use the First In Synthetic Motor Oil's.
See My Bio For Information & Contact Details. Brown? if it is a dark brown, nothing. Normal wear and tear. Actually a brown carmel color would indicate a very clean and good running motor. if it is black, then the motor is dirty with 'sludge' and the best way to clean that out is to run the car for about 10 miles on an interstate, change the oil while hot, and do it again 2 or 3 more times, including the filter, to ensure all the sludge is out of the engine.
One would expect motor oil to be brown.
it looks like a motor oil dip stick. but where you put it in is a bigger circle than the motor oil, it is most likely to be seen in the back of the motor towards the firewall
Too much usage, usually.
This can be an indication of moisture in the oil. Possibly a leaking head gasket.
it looks milkyish and brown
Looks like you're getting coolant mixed in with the engine oil. Not good. Receipe for disaster. Could be a bad head gasket and/or cracked head. Do not run engine any longer until you have it checked out. Coolant in the oil will destroy bearings in a short time.
You mean like water in motor oil? Easy to find out: just look at it. If it looks like mayonnaise, there's water in it.
If you use the wrong weight motor oil in an engine, it is possible that you could destroy the engine due to lack of lubrication, either because the oil's viscosity is to low to provide adequate bearing separation, or because the oil's viscosity is to high to permit adequate lubrication. Use the manufacturer's recommended oil.
It depends on the concentration and the medium to which it is mixed with. Looks like if done properly, you can compost motor oil in less than a year. Plants would help in the process.
Check your dipstick to see if the oil has a milky appearance. If so there is coolant in your oil and you probably have a blown head gasket. If the oil looks normal and the fluid you described as brown looks the same as the color of your motor oil ( a bit dirty ) you have either blown a head gasket or craked the head. If your vehicle has an oil cooler you may have a leak in the lines to it or a leak in the cooler itself. There is also a type of refridgerant ( from your ac system ) that will turn brown when exposed to air.
Use Honda 10w40 and you will not go wrong.
are you sure you are looking at engine oil or is it the tranny fluid(which is reddish brown but there are also synthetic motor oil that are reddish in color but DO NOT MIX regular oil w/synthetic oil make sure of what you have before adding causes major engine problems