sweety Posted October 19, 2009 Share Posted October 19, 2009 As i've only had the disco V8 for a couple of weeks i'm now slowly going through things & because of the cold weather (some nice hard frosts) i'm wanting to change the anti-freeze/coolant so I know it's at full strength. Apart from putting the heater onto hot is there any other bleeding of the coolant system on the 4L V8 ? I noticed a bleed plug on the top rad hose & wasn't sure if it really needed undoing as I would hate to end up with a leak from here & have to get a new pipe Quote Link to comment Share on other sites More sharing options...
BogMonster Posted October 19, 2009 Share Posted October 19, 2009 Yes it does. Mine had a new rad in a couple of weeks ago(leaking around the end tanks, as usual with D2 rads) and it was mainly bled through the bleed point in the hose. Rave says: 5. Release top hose from retaining lugs on the fan cowl, leaving the hose to rest on the lugs. 6. Remove bleed screw from top hose. 7. Unclip the bleed hose from the battery box. 8. Remove expansion tank from its mounting bracket. Slowly fill the expansion tank with coolant, approx. 4 litres (7 pt). 9. Raise the expansion tank approx. 20 cm (8 in) vertically, coolant will drain into the system. 10. Refill the coolant expansion tank until a steady flow of coolant is emitted from the bleed hole. 11. Fit the bleed screw then, with the expansion tank still raised, continue filling the system until the coolant level reaches the base of the expansion tank filler neck. 12. Fit expansion tank filler cap, fit the expansion tank to its mountings and clip the bleed hose to the battery box. 13. Refit the top hose into its lugs on the fan cowl. 14. Start and run engine until normal operating temperature is reached, and check for leaks. 15. Switch off engine and allow to cool. 16. Check for leaks and top-up coolant to cold level mark on expansion tank After I had been running around in mine and it had done a couple of warm up / cool down cycles I had to add about another half a litre of coolant so I guess there must have been a little bit of air in it. Now stabilised and running fine. The new engines use the pink OAT antifreeze. You can probably use the old stuff with a thorough flushing but don't mix the two sorts as apparently the sky will fall on your head and demons will flay your behind with little forks. Quote Link to comment Share on other sites More sharing options...
sweety Posted October 20, 2009 Author Share Posted October 20, 2009 Thanks very much for that will see if I can get this pink anti-freeze Quote Link to comment Share on other sites More sharing options...
PaulMc Posted October 20, 2009 Share Posted October 20, 2009 Thanks very much for that will see if I can get this pink anti-freeze I used Halfords Advanced Antifreeze, which is an OAT (Organic Acid Technology) formulation, in my D2 V8 . Quote Link to comment Share on other sites More sharing options...
teabag Posted October 20, 2009 Share Posted October 20, 2009 Not that it matters to any one, but I also use the Halfords stuff in my cooling system and it lasts for five years. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.