Not 100% sure I'd want one that bottomed out at 1 bar or even close to it. The owners manual specifies anything down to 0.3 bar is acceptable, maybe a tad lower..... after a long, hard, hot, fast run on the interstate, in the summer, my first stop-light after I take an off-ramp easily drops the oil pressure down to half a bar or less... it's back up once things cool off, but I'd hate to have the alarm going off in the meantime.

1 bar = about 14.5 psi

0.3 bar (the first time I would ever consider installing a buzzer) = 4.4 psi.

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~Michael S.~
Past cars:

1986 300SDL
1987 300SDL
1982 240D
1982 300SD


Current:

1987 300SDL