humewasright

Square hole. 1/4" is too small, 3/8" seems to be too big. What tool do I need to remove this plug? Is it 5/16", or metric?

Also, can the temperature sensor be removed instead to drain the coolant from the block? That looks easier.

Thanks

fredjacksonsan

Not sure...square hole....socket driver?

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Saudade

You use the squaredrive end of your ratchet or breaker bar. 3/8th should fit but it's likely pretty rusty.

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Dad's taxi:
'88 XJ - 175K and going strong.
K&N, Ford Injectors, No other mods