89 Chevrolet 2.8 V6 119k miles (before new sensor)

89 Chevrolet 2.8 V6 119k miles (after new sensor)

92 GMC 4.3 V6 CPI (with leaking poppet valve tube, SFT 89, LFT 108)

94 Ford 5.8 V8 85k miles

90 Lexus 2.5 V6 102k miles

93 Toyota Paseo 4cyl 90k miles

93 Chevrolet Pickup 5.7 TBI O2 sensor 122k miles.

96 Ford Ranger PU 3.0 PFI 85k, Fairly ragged dual O2 pattern.

Pattern looks better after replacing original Platinum plugs that were totally shot.

96 Pontiac GP 3.1 V6 47k miles Clean, perfect o2 waveform.

85 Buick 3.8 V6 65k miles, old OS2, pretty slow, original O2, 117ms rise time.

85 Buick 3.8 65k miles, new OS2, much better, 15.3ms rise time.