Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 09-03-2002, 03:02 PM
Marek Wieckowsk
Posts: n/a
Changing Coolant In 1998 SL500

I am planning to change coolant in my 1998 SL500. However, I am not able to determine location of the drain plugs, which should be located on both sides of the engine block. Also, I am not sure how to bleed the system.

Any tips how to do it will be appreciated.


Reply With Quote
Old 09-03-2002, 05:19 PM
Registered User
Join Date: Jan 2002
Posts: 352
If I were you, I would give it to the dealer. My dealer charges $50.00 for the change w/ coolant. The coolant costs $13 and if you do it yourself youll also have to buy the distilled water as well as drop it off to a recycling center. Plus I think the drain plugs are located on the middle on each side of the blocks on top of the headers. Do a search
Reply With Quote
Old 09-04-2002, 09:28 AM
Michael's Avatar
Join Date: Jul 1999
Location: Boston, USA
Posts: 2,700
If a dealer will do it for under $100, then go that way.

Otherwise, be advised that the block drains are aft of the motor mounts, and screw straight up into either side of the block. Be advised they often require single-use washers of a particular material.

Beyond draining the block via these drains, I'd also undo the hoses going to/from the heater core, and insert some sort of extractor hose to suck any coolant out of there. Also, unhook the lower radiator hose, as it's lower than the drain.

Your system is self-bleeding; in my experience, I added equal parts coolant & water (via a disconnected upper radiator hose)until the system stopped looking for more. Hook the hose back up & fire up the car; keep the radiator cap off at first in case you need to add additional fluid. When warm, turn on the defroster full blast (once car's warm) and that'll get fresh coolant into the heater core. Turn the car off & let it sit; in a few minutes it'll burp and the coolant level in your expansion tank will drop. Top off & you're done!

"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 01:52 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page