krieshan

Sorry dude, The coolant swap was in local garage , they only drained the radiator? I did tell them to also drain the engine, but they obviously didn?t do that.

I knew I was missing a few liters because they only used 7 bottles. When I bought the coolant the dealer also said it is almost impossible to get all of the coolant out but 9 liters should have been possible.
I hope someone else can provide a good DIY for a coolant swap, the proper way 

Because of the bad service , I changed the engine oil and spark plugs myself after reading a DIY on spark plugs.
Here is the link http://www.geocities.com/convict_14/index.html
The correct momentum is 30 Newton Meter for fastening the spark plugs 

I swapped the engine oil at 5000 K miles  It was already turning black A lot of city miles to blame.
Thanks for all the responses.

pipper

GREAT writeup!