oil pressure gauge good, then not so much (1 Viewer)

Joined
Nov 1, 2018
Messages
53
Location
UPSTATE, NY
The oil pressure gauge on my '68 FJ40 shows good pressure at start up but then slowly fades to almost nothing after the engine warms up. Every time. Any suggestions?
 
Joined
Nov 1, 2018
Messages
53
Location
UPSTATE, NY
Thanks, The last mechanics to work on it in depth stated the pressure was good and were not sure what was going on with the OEM gauge.
 

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