Join Date: Mar 2010
Location: Mountain View CA
High Fuel % in Engine Oil
I have seen a sudden rise in fuel % in my oil (per Blackstone analysis it was 1%, recently it jumped to 2.8%, then 3.8%). I change the oil every 2-3 track days, so the mileage is low.
I wonder if anyone could suggest a cause? Here is some relevant background:
This is an '07 Exige S with Blade275 tune (3" pulley, stock fuel injectors and pump, cup air box).
I changed the injectors (they were original).
Leakdown is 2%, 3%, 3%, 2%.
Wide Open Throttle AFR is 12. Idle AFR is 14.
20 minutes into a track session: engine oil temp is 95°C/203°F; coolant temp is 87°C/189°F.
I have only low-pressure crank-case ventilation and fuel condenses in my catch cans.
Thanks in advance for any thoughts!