on a track, however, it's far less useful. the way i usually determine if my oil is low is by using the dipstick, haha.
for daily driving, absolutely, it's a great gauge to have. and it still is useful on track, but i think an oil temp gauge is a little more useful. that's all i really meant.
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1991 MR2 Turbo - 2.1L high compression stroker 3SGTE
2006 Tacoma 4x4 TRD Off Road - All-Pro front bumper, Old Man Emu shocks, Old Man Emu HD front coils, All-Pro leafs
1990 240SX Coupe - sold
2008 Civic Si Sedan