Should I be concerned? Cylinder Head temp fluctuation

[TTT12]

Ever since I got my car serviced recently the cylinder head temp reading seems to fluctuate a lot. Before the service it would sit around 87-88 all the time. It would occasionally move under certain circumstances, for example, running up a mountain the temp might creep up a bit to say 91. Coasting down long declines would drop to maybe 84.

Under normal driving it is now going as low as 81-82 and up to 91-92. The actual temps don't really worry me it's just the constant fluctuation.

Should I report this to the servicing dealer?

MY22.25 Ecoboost

Sponsored

 

[DRU842]

As long as there is no drop in overall water level you should be OK. Report it to the dealer for the next service, they may replace the thermostat.

 

[TTT12]

Cheers. If it gets worse I will report it sooner but appreciate the response, thank you.

Sponsored