Plugs: NGK BPR5ES. No pressure test results yet.
#1 had small amount of oil on resistor ring but nowhere else. Carbon deposits. Light brown core.
#2 no carbon deposit. White core.
#3 seems to be the worst one. The other side of #3 core was whiter than the side shown. More carbon deposit than others. No breaks or too much wear on core or resistor.
#4 Rust on resistor. Small amount of carbon. Whitest core of all.
Car runs fine. Burns a maximum of one quart of oil between changes.
All plugs went in with a 0.027 gap and came out around 0.033
