Coolant problem... (archive)

Here is my situtaion:
1. I got my water pump changed 4 mos ago and they added coolant.
2. I topped last week with 300 ml (1/3 qt) of coolant - PEAK brand.
3. I read the Benteley manula and it says use phosphate free coolant.
4. I checked the PEAK brand and it has dipottasium phosphate.
5. The total capacity is 11 litres and I just used 300 ml to top it off.
6. I asked my service station, and they use PRESTONE and that ingredients say it does not have any dipottasium phosphate.
7. PEAK brand says it is safe for Aluminium head engines.
8. Should I worry to drain all the coolant and fill with PRESTONE, or 300 ml is a small drop and should be fine.
9. I have trown the rest of PEAK brand and bought a PRESTONE brand so that I do not make the same mistake again,

If anyone can suggest me. would appreciate.

Sam

Follow Ups:

[ Follow Ups ] [ 3-series (E30) Message Board ] [ Msg. Board FAQ ]

Questions, comments, or problems, please visit the Roadfly help desk.