To flush or not to Flush

I have question and need some opinions, so here it goes. My truck is 2007 with 85k roughly and it is 5 years old. I am debating on whether to flush my radiator coolant or not. here is my question, I had a rat supposedly ate my Knocking sensor in February 09. It looks like they had to drop the coolant completely so you think they would have flushed it or just add and dropped new fluid in. Do you think I should just drop add new coolant or flush it???? thank you

01TOZADIAG02/03/2009ENGINE DIAG 2ENGINE DIAG 2 ~|~CHECK ENGINE LIGHT ON ~|~ ~|~
REPLACE KNOCK SENSOR WIRES DONNY #30PARTSNAMEPART
#QTYSENSOR, KNOCK CONTRO89615060101GASKET,
AIR SURGE TA171760P0101GASKET,
INTAKE MANIF17177AD0101RING, O96761350312GASKET,
INTAKE MANIF17178AD0101WIRE,
SENSOR822190C0101
SUPER LONG LIFE00272SLLC2012

 

Since the SLLC costs money, most likely the shop just topped up the coolant. You should flush it at 5 years / 50K.

 

ok. what is SLLC???

edit ... nvm

 

If it's yellow let it mellow...

 

If it's pink, don't lick the stink.

 

nice guys. If it is brown flush it down ....