#6 in Oil & fluid additives
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Reddit mentions of Prestone AF-KIT Flush 'N Fill Kit
Sentiment score: 2
Reddit mentions: 4
We found 4 Reddit mentions of Prestone AF-KIT Flush 'N Fill Kit. Here are the top ones.
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Professionally back-flushes cooling systems of most cars and light trucksAllows you to flush the complete cooling system, not just the radiator, in one easy processRemoves rust and dirty coolant that that can lead to a clogged radiatorPrevents potential overheating and engine damageEasily installs antifreeze/coolant in minutes
Specs:
| Height | 2 Inches |
| Length | 9 Inches |
| Number of items | 1 |
| Release date | February 2013 |
| Size | Pack of 1 |
| Weight | 0.25 Pounds |
| Width | 9 Inches |
EDIT: I just realized the picture shows the OIL CAP. I thought it was the Radiator cap when I glanced at first. Oh well... I'll leave the post anyways, perhaps it helps someone with cooling issues. OP: I never dealt with that problem. Definitely looks like cross contamination with coolant. But if that's not the case, try looking into a few oil changes (perhaps with low viscosity oil), along with snake oils such as Seafoam and Marvel Mystery Oil. I had very good luck with them in the past. Best of luck.
Hey man, I had a nearly identical issue with my truck and fixed it without too many problems. This is assuming your head gasket is good and you aren't cross contaminating oil and coolant.
Basically it boils down to (te-heee) use of certain old antifreeze products known to cause this as well as products like "stop-leak" and similar. Those products and inadequate cooling system maintenance can cause this problem.
You will need a flush kit, along with a few bottles of cleaner. You can get both at Walmart cheaper than Amazon. Get also 5-6 gallons of distilled water.
Install the flush kit on the heater core hoses as described in the instructions. If you have trouble determining which is the hose going into the heater core, turn on the car (ensure heat is off) and touch both heater core hoses as it warms up. The one that stays cold is the outlet.
Flush the system with the garden hose as described in the instructions. The first few times you do it you will see a ton of crap coming out. Flush for a few minutes, then turn off the hose and let the water drain for a bit. Close the drain plug and flush cap, empty one bottle of cleaner in the radiator, top it off with distilled water, close fill cap. Drive the car for a few days.
Repeat the above process 5-6 times every few days until the flush water coming out is completely clean and you no longer see baby-shit accumulating under the radiator cap.
Once you have done a couple of rounds and the coolant water is reliably clean (no traces whatsoever of that crap), do a few rounds of distilled water only (to remove all traces of cleaning agent). Then go ahead and fill it up with good quality antifreeze compatible with what's recommended for that vehicle.
Keep in mind that antifreeze is needed for multiple reasons, including lubrication. Just because it's summer and you don't run the risk of coolant freeze, keep in mind that during the above process you will be running the water pump without lubrication. Since it seems like it's your daily driver, you should be able to do the whole process in the span of a couple of weeks without issue.
Good luck and report back with your findings.
I went out and bought one of these Prestone Flush 'N Fill Kits and followed the directions in this XJTalk thread.
You could do that several times if you wanted to. It would take more than a gallon though. This is what you need.
ez fix, buy one of these kits: http://www.amazon.com/Prestone-AFKIT0-Universal-Flush-Fill/dp/B000CCFY5W/ref=sr_1_9?ie=UTF8&qid=1323365128&sr=8-9
flush system out and run water from hose threw motor while running for like 20 minutes good to go, ditched the dex cool out of my saab with a similar kit. cheap and sold everywhere