Oil in catch can looks and acts like mucus. BHG?

phat_toaster · 07-21-2014, 06:23 PM

I went to empty the aftermarket oil catch can on my '89 7MGTE today, and expected to see, well, oil. Instead, what I found was a goopy mess that looked like brownish mucus/mustard/vomit. The oil on the dipstick and under filler cap looks normal and clean, and no bubbling in the radiator. The car has been sitting for about six months, only started a few times, and has only driven about 7K miles in the last two years. I've heard that a car sitting and not being heated up fully will give similar results. Anybody able to shed some light on my dilemma? Thanks!

MJG · 07-22-2014, 03:41 AM

The oil catch can is designed to remove water produced during combustion through crank case ventilation.
If you start and run your engine for a period of time, which does NOT bring the engine to FULL operating temperature, you will create water vapor that will collect in your crankcase.
Any car which is not driven, must be started and run, at an increased RPM, for a period of time to bring the engine to full operational temp.
This requires approximately 45 minutes @ 2500 RPM.

07-21-2014, 06:23 PM	#1
phat_toaster Intake Join Date: Jan 2012 Location: Provo, UT Posts: 36	Oil in catch can looks and acts like mucus. BHG? I went to empty the aftermarket oil catch can on my '89 7MGTE today, and expected to see, well, oil. Instead, what I found was a goopy mess that looked like brownish mucus/mustard/vomit. The oil on the dipstick and under filler cap looks normal and clean, and no bubbling in the radiator. The car has been sitting for about six months, only started a few times, and has only driven about 7K miles in the last two years. I've heard that a car sitting and not being heated up fully will give similar results. Anybody able to shed some light on my dilemma? Thanks! __________________ '89 Supra Turbo Sport Roof, White on Blue -3" Magnaflow Exhaust -HKS Blow Off Valve -GReddy Turbo Timer -Tokico Illumina II Struts

07-22-2014, 03:41 AM	#2
MJG 3" Exhaust Join Date: Mar 2010 Location: Washington State Posts: 125	Oil Catch Can The oil catch can is designed to remove water produced during combustion through crank case ventilation. If you start and run your engine for a period of time, which does NOT bring the engine to FULL operating temperature, you will create water vapor that will collect in your crankcase. Any car which is not driven, must be started and run, at an increased RPM, for a period of time to bring the engine to full operational temp. This requires approximately 45 minutes @ 2500 RPM.