Oil thermostat

[W9L]

(06-24-2021 )earnies2 Wrote:  What tool do I need to remove the plug? I know I need a snap ring players for the stat.

13mm, 15mm, 10mm 3/8drive sockets, a dead blow rubber mallet for getting accessory bracket off. A 3/4" Allen wrench. Need just a regular Allen wrench. The socket type will not clear water pump. A mirror on a stick and the skill to use the snap ring pliers in the mirror. A good pick and hook set for when you get fed up trying to get snap ring out in the mirror. A new snap ring and oring.
In my case a 10mm1.5 helicoil set for the mounting bolt that broke off when trying to remove. 1/2" breaker bar for removing belts. As to answer the question as to why to change it, mine had come apart and came out in 3 pieces. Put new stat in high oil temp problem solved.