|
|
|
#1
|
||||
|
||||
How much water do you have to add each month?
I seem every 1500 miles or so when I open the hood to check fluids my coolant reservoir is low. It seem like I have to add a cup or 2 every 1500 miles or so. The temperature gauge shows the car is running cool and I have never found any leaks. I replaced the reservoir cap about 2000 miles ago but it doesn't seem to be helping.
So how much water do you add each month to keep your reservoir full? I know it probably depends on temperature but just wanted to know if this was normal. Thanks.
__________________
85 300D Turbo |
#2
|
||||
|
||||
Definitely not normal.. I've never added water and the level dosen't change.
__________________
Ich liebe meine Autos! 1991 Mercedes-Benz 560SEL | Megasquirt MS3-Pro | 722.6 transmission w/ AMG paddles | Feind Motorsports Sway Bar | Stinger VIP Radar | AntiLaser Priority | PLX Wideband O2 | 150A Alternator | Cat Delete 1981 Mercedes-Benz 300SD | Blown engine, rebuilding someday... 1981 Mercedes-Benz 300SD | Rear ended, retired in garage. 2009 Yamaha AR230HO | Das Boot Excessive speeding? It ain't excessive till I redline! |
#3
|
|||
|
|||
In the year and 8 thousand miles I've had my 240D I've not had to top it up from normal use.
- Peter.
__________________
2021 Chevrolet Spark Formerly... 2000 GMC Sonoma 1981 240D 4spd stick. 347000 miles. Deceased Feb 14 2021 2002 Kia Rio. Worst crap on four wheels 1981 240D 4spd stick. 389000 miles. 1984 123 200 1979 116 280S 1972 Cadillac Sedan DeVille 1971 108 280S |
#4
|
||||
|
||||
On mine if I fill it to the "level line" on my reservoir, which is new, it eventually goes down to being about 2.5" from the bottom, and stays there, forever. It only takes it maybe 2-3 drives to "loose" that other fluid, but once its down a little, thats where it stays. Always has done that, for all 51k miles I've driven the car. It has new hoses, reservoir, and radiator....and it runs rock solid at 80-81C no matter the outside temp. Who knows. Probably no big deal. Does yours continue to fall once it has gone down a bit? If so its probably leaking....I have no clue why mine does it.
__________________
-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#5
|
||||
|
||||
Quote:
That happens to me too. Exact same thing... I think the coolant reservoir leaks.
__________________
1985 CA 300D Turbo , 213K mi |
#6
|
||||
|
||||
The vent line on the reservoir has a hose and is open. Maybe it is leaking out that hose when I drive. That hose suppose to go anywhere?
It seems to go down and stay but have not let it go that long since it is low and end up adding more water.
__________________
85 300D Turbo |
#7
|
||||
|
||||
Quote:
__________________
1999 SL500 1969 280SE 2023 Ram 1500 2007 Tiara 3200 |
#8
|
||||
|
||||
water!!! are you nuts........
it rusts your motor out from the inside out........ use anti freez..........
__________________
vin 123 123 10 155044 |
#9
|
||||
|
||||
I just had to top off about a month ago with about a cup ... but my cap was really pretty tattered ... there were cracks/tears in the gasket. Replaced it and hopefully won't see any level drops from there. I had the oil tested about 3,000 miles ago and it came up great, no coolant in oil at all. I was careful to use 50/50 MB coolant and distilled water. In my time with the car, I have never had to top off before this, withthe exception of one time when the overflow tank ... well, overflowed. Not sure if the 617s have that tank, though. Mine is a 603 ...I didn't know that tank existed until coolant started coming out near the passenger wheel well.
__________________
1987 300D, arctic white/palomino--314,000 miles 1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles 2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles 2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles 1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles 1995 S320, black/parchment--34,000 miles (Dad's car) |
#10
|
||||
|
||||
Quote:
__________________
Seth 1984 300D 225K 1985 300D Donor body 1985 300D Turbo 165K. Totaled. Donor Engine. It runs!!! 1980 300SD 311K My New Baby. 1979 BMW 633csi 62K+++? Dead odo |
#11
|
||||
|
||||
Water pump, "Weep-Hole"
Check the "weep hole" on the water pump after driving the car a while. It's behind the fan pully, on the top of the water pump shaft housing. If it's leaking a few drops every now and then it will usually evaporate on the engine itself before ever making it to the ground. Look all around it, for water stains, on the casting of the block, and pump etc.. I bet that's your issue. It means that that the water pump, is on it's way out, and will need replacing very soon. The seal in there goes bad, and that's what the "weep hole" is there for...So the bearings in the pump, don't get wet, the water can escape before making it to them.
Remember, "Weep-Hole", behind fan pully, after driving a while. Check it now and then... |
#12
|
|||
|
|||
Look for white streaks on the engine and wet spots on the radiator.
|
#13
|
||||
|
||||
Buy a new cap.
one with a good seal.
__________________
-1983 VW Rabbit LS Diesel (5speed, VNT/Giles build) |
#14
|
||||
|
||||
I'll second that-fixed mine, along with tightening a few clamps. Does the cooling system build pressure fast when cold-upper rad hose stiff after only a minute or two of running-that's the telltale sign of a blown head gasket in a diesel along with tiny bubbles in the coolant (we'll miss you, Don Ho!)
__________________
1982 300DT 190K (Diesel Purge + synthetic oil=smoothness at last!!!) 2004 Ford E-350 6.0 L PSD 227K 2006 Dodge Ram 3500 SRW HO Cummins 4X4 48RE 42K (brute force tow vehicle) 2005 Scion xB wife's rolling pop can 1993 GMC Sierra C3500 6.2 142K |
#15
|
|||
|
|||
The original post said "add water" and "runs cool".
The higher the ratio of water to coolant, the more efficient the heat transfer. You should add a 50/50 mix of coolant and water, not just water. Who knows what your actual ratio is now. You also should never let the ratio of coolant get below 45% per factory specs. Coolant lubes the water pump. Might be a good idea to drain and start over. Steve |
Bookmarks |
|
|