Wdeertz
Senior Member
I recently had all my fluids tested by a lab. The coolant came back with a Ph of 6.67 and the lab indicated to replace immediately. The coolant only has about 250 hours on it so I was surprised by the results. The coolant is Valvoline G05 Zerex which states it’s for heavy duty diesels. I had a new container of Valvoline G05 Zerex available so decided to test the Ph and it came back at 6.7 so the lab results aren’t surprising given this information.
I’ve tried to google the appropriate Ph for coolant but couldn’t find anything definitive other than there was a consensus it should be greater than 7. Did I get a bad batch of Valvoline g05 Zerex? Anyone care to share their coolant lab results in particular as it relates to Ph?
I’ve tried to google the appropriate Ph for coolant but couldn’t find anything definitive other than there was a consensus it should be greater than 7. Did I get a bad batch of Valvoline g05 Zerex? Anyone care to share their coolant lab results in particular as it relates to Ph?