2013 Vauxhall Corsa SE
I’ve noticed a coolant leak near the timing belt which has seemed to occur after I replaced the coolant expansion tank and flushed the coolant myself about 3 days ago. I’ve previously flushed the system without issue but this time round I used a additive from Holts (Holts Speedflush), possible the additive is the cause. I’ve seen that the water pump is common to go on corsa D. Also seems that the coolant is leaking onto the belt itself too. car has 80,500 miles on clock and unaware if it’s had belt or water pump replaced ever.