Protect your car's motor by replacing coolant hoses and avoiding coolant roulette. Do NOT drive a car around with coolant leaks, EVER. You WONT win. It will bite you and destroy your motor. Get it fixed. Did I say fix it yet? Avoid blown head gaskets.

WARNING: Most cars have more than 4 hoses, ALL OF THEM should be replaced. Even the heater hoses and any turbo coolant hoses.

If you have a turbo Volvo like mine, these are the hoses you need:
1. Upper radiator - 1335433
2. Lower radiator - 9470409 / 6842428    • Lower radiator hose replacement, Volv...  
3. Upper reservoir - 9135267
4. Lower reservoir - 6842894
5. Heater inlet - 9186849
6. Heater outlet - 9186847 / 3528275
7. Turbo supply - 6842190:    • Coolant hose replacement, turbo suppl...  
8. Turbo outlet - 30713305:    • How to replace the Turbo coolant retu...  
As a bonus, you should also replace the heater hose locking clips. If they fail, the hose will pop out and cause the loss of coolant, yes in seconds. - 3545662