How many quarts/liters/gallons of coolant does our 4.0 take? Im sure ive added about 3 gallons over the last two months and every week I look at my coolant bottle its damn near empty. I never see any puddles under the car or drips or anything, completly dry. I have a suspicion that im losing coolant but yeah idk what to be doing. Over the summer I had a bad rad cap and it leaked bad all summer till I got a new cap about 2 months ago. Am I somehow still replenishing it from leaking all summer? This is really frustrating.

 

What year is your jeep?

 

is there alot of white smoke comming out of the tail pipe?

 

1. As mentioned, we absolutely need the year/engine with every post. There are significant differences through the years.

2. You have a problem that you need to resolve IMMEDIATELY.

3. Either you are leaking it or burning it. You need to find out which. Get under the vehicle with a good light and a hot fully pressurized cooling system. See if you can find that leak.

4. If you can't find any leak, then you are likely burning it, meaning you may have a cracked cylinder head, blown head gasket, etc. If you are burning it, know this. You are killing the bearings in your engine. That is why you need to re-read item #2.

 

pressure test and dont forget the cap...

 

 

It's a 2000, and no smoke from exhaust.

 

Your XJ from the factory came with the "infamous" 0331 cylinder head, which can crack between cylinders 3-4 because of a casting defect.

The #1 symptom of a cracked 0331 head is "unexplained coolant loss".

Here is a link of required reading for you and all 00-01 owners.

http://www.jeepsunlimited.com/forums...d.php?t=391831

 

You have got to be fu**ing kidding me. Looks like its gonna be an early christmas present to me. OMW to the nearest Jeep dealership to pick up a used SRT8.