Check the oil... This sounds like a head gasket to me, it's similar to what my '78 240D would do when it had gone bad.
Curt Sent from Yahoo Mail on Android On Tue, Dec 4, 2018 at 5:59 AM, Bob Rentfro via Mercedes<mercedes@okiebenz.com> wrote: I’ve been sorting this 2004 Outback and I’ve been struggling a little with the cooling system. When I bought it from a 23 year old dude called Warren, the coolant was barely in the filler neck and the reservoir was empty. On the test drive I heard the water sloshing sound behind the dash which I reckoned was a poorly filled and vented/burped system. I drove it 23 miles home, thru town, temp remained perfect but I could hear sloshy slosh periodically. When I got home the coolant was still in the filler neck and the reservoir was empty. I filled the reservoir to the correct level. Next morning, levels good, still heard sloshyness and I took off on my 40 miles freeway drive to the old nuke plant. Set the cruise to 78. Temp held perfect. When I went off the cruise in preps to exit, the temp climbed to almost hot. I shut it off to be safe. I let it sit for 15 minutes and, upon starting, was at the hot hash mark (not red) but, in 10 seconds, it dropped to almost normal. I drove the last 8 miles with it fluctuating between half and 3/4 temp. Came out 10 hours later to drive home and checked level...coolant in the neck and none in the reservoir. Placed the reservoir at correct level and drove home on the back roads (top speed 60, lots of speed changes, many stop signs) and temp never moved off of half. Checked level post CrossFit and it was in the neck but none in the reservoir. (Oh, and there are no leaks anywhere) So I place the reservoir at the correct level and proceeded to drive it for two days...around town and two 25 mile trips on the freeway and temps and levels stayed perfect. I checked level last night and the levels were perfect. Drove on the freeway to work this morning and, when I slowed down to exit, it got hot. Shit. I let it cool off and drove it the last 8 miles in. I checked level when I got to the parking lot, and the reservoir is FULL. Jeez. WTF. Bob R Sent from my iPhone _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
