You are probably OK if you reach 3 bar at speed, Anything at or about 15 psi at idle is safe. The senders vary quite a bit. Of course temperature and grade (weight) of the oil also come into play. My '89 is just above 1 bar at idle and I am now up to 204,300 mi.

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Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.