Pagoda SL Group

W113 Pagoda SL Group => General Discussion => Topic started by: n/a on May 25, 2006, 09:57:31

Title: Heater Hoses Replacement
Post by: n/a on May 25, 2006, 09:57:31

I am planning to replace the hoses that connect from the engine to the heater.  I would like some advice on whether I need to drain the coolant to do this.  If I do not drain the coolant, how much will I lose?

Louis 70 280sl Red Auto

Title: Re: Heater Hoses Replacement
Post by: rwmastel on May 25, 2006, 10:39:18

When was the last time you drained the coolant?  It should be done every 2 years, I believe.

Rodd
Powell, Ohio, USA
1966 230SL, Euro, Auto, Leather, both  tops
1994 E420

Title: Re: Heater Hoses Replacement
Post by: n/a on May 25, 2006, 12:42:33

The coolant was replaced about year and a half ago. I want to know if I need to plan to replace them.

Louis 70 280sl Red Auto

Title: Re: Heater Hoses Replacement
Post by: Naj ✝︎ on May 25, 2006, 12:47:34

quote:

---

If I do not drain the coolant, how much will I lose?

---

Just about whats in the matrix and hoses, maybe 1 liter

naj

65 230SL
68 280SL

Title: Re: Heater Hoses Replacement
Post by: ted280sl on May 25, 2006, 19:06:37

Louis,
  The heater hoses are about the highest point of the cooling system. If you drain some coolant out you will be OK. The real challenge is re-filling they system and getting the air out. Some of our cars have a bleeder bolt on top of the thermostat.
Regards,
Ted 1969 280SL

Title: Re: Heater Hoses Replacement
Post by: n/a on May 25, 2006, 20:35:57

Thank you for the help. I will drain some coolant before I start.  I am planning to replace the thermostat anyway.

Louis 70 280sl Red Auto