Do you use a sealant when replacing a freeze plug?

Yes, it is advisable to use a sealant when replacing a freeze plug. This helps ensure a tight seal and prevents coolant leaks, which can occur due to the expansion and contraction of metals in temperature changes. Make sure to choose a suitable sealant that can withstand high temperatures and is compatible with the coolant used in your engine. Proper installation with sealant can enhance the longevity and effectiveness of the replacement.