best coolant Ph level-??

[Blitzkrieg Bob]

If it tastes 2 years old, then change it.

[Ross]

Which cellars best? Blue, green, yellow or orange?

[Blitzkrieg Bob]

Served at room tempurature.

[ryan roopnarine]

only jerks and idiots use antifreeze. i top up my coolant resivoir with md 20/20. mad dog.....it gives you wiiiinngssss

[Blitzkrieg Bob]

only jerks and idiots use antifreeze. i top up my coolant resivoir with md 20/20. mad dog.....it gives you wiiiinngssss

Gives you wings.

MD 20/20 gives you visions.

[bigtisas]

I just tested the green coolant in my e34 using litmus paper. It's 9. The coolant is about 2 years old. Then, I tested the red coolant in my Toyota. It's about 7. The coolant is at least 5 years old. I'll test the coolant in my gfriend's 06 325i tonight. I'll post the test result.

BTW, the litmus paper I got can test ph range from 6 to 9. I bought it from ebay. It is originally for urine and saliva ph test.

[Bill R.]

zerex g48 the ph is 8.1 at 50/50 mix levels. You can test with litmus strips as others have suggested. Here's a couple of documents with some ph info on them from bmw and from zerex for the g48 factory coolant

What is the appropiate/best Ph level for BMW's coolant system?. It is my understanding this is very important for BMWs. Also, how can I test at home? Did not find anyting on ph levels in archives. Tried 3 different ways.

BTW, I use BMW blue with distilled water at all times. Been two years since changed.

TIA

[Russell]

Thank you Bill for an excellent answer. I appreciate many of the others as well .Wish I knew a lot more of the technical aspects of vehicles. This board has helped me understand what I can work on and what to have a 'professional' work on. As this is my daily driver, I cannot tolerate significant down time.