I had an opportunity to run some testing in a track environment with two catch cans over the past couple months. I had purchased a JLT can right after I got the car as it was quite common. It caught some oil as I drove, so I figured it was doing a reasonable job. Through a forum member over on MustangSource, I got connected up with the guys who sell RX brand oil separators. I'd never heard of them, but they offered me a can to run some testing - figured why not.
Summary of my findings are below. I realize it's limited data points, but the results are pretty clear, especially in the couple days of testing with the RX first in series with the JLT.
I ran either the JLT first in series with RX or visa versa.
I ran 5 track days with a bit of street driving intermixed.
3 days at Thompson Speedway Motorsports Park
- 1 day with JLT in line first
- 2 days with RX in line first
2 days at Watkins Glen
- Both days with JLT in line first
Thompson seems to result in MUCH more oil coming through the separator, as shown in the results. It's a lot of hard on the gas, hard on the brake with minimal shifting and basically the whole track is done in 3rd gear.
Watkins Glen is a much faster track overall with more time at WOT, mainly in 4th gear
With the exception of the first outing at Thompson with the JLT first in line, it essentially caught no oil whereas the JLT caught just about everything with only trace amounts getting past the can
And below are the numbers from my testing. I'll clearly be keeping only the RX going forward, as the JLT catches almost no oil. I realize it seems to be well known that the JLT is not very effective, but having data to support this is good proof.
Lastly, I was amazed at how much oil was caught in only 2 days at Thompson (plus about 200 street miles with almost no revs over 3500) this past week over 2 outings. About 124 mL is what I measured coming out of the RX can. That's over 4 ounces...
Summary of my findings are below. I realize it's limited data points, but the results are pretty clear, especially in the couple days of testing with the RX first in series with the JLT.
I ran either the JLT first in series with RX or visa versa.
I ran 5 track days with a bit of street driving intermixed.
3 days at Thompson Speedway Motorsports Park
- 1 day with JLT in line first
- 2 days with RX in line first
2 days at Watkins Glen
- Both days with JLT in line first
Thompson seems to result in MUCH more oil coming through the separator, as shown in the results. It's a lot of hard on the gas, hard on the brake with minimal shifting and basically the whole track is done in 3rd gear.
Watkins Glen is a much faster track overall with more time at WOT, mainly in 4th gear
With the exception of the first outing at Thompson with the JLT first in line, it essentially caught no oil whereas the JLT caught just about everything with only trace amounts getting past the can
And below are the numbers from my testing. I'll clearly be keeping only the RX going forward, as the JLT catches almost no oil. I realize it seems to be well known that the JLT is not very effective, but having data to support this is good proof.
Lastly, I was amazed at how much oil was caught in only 2 days at Thompson (plus about 200 street miles with almost no revs over 3500) this past week over 2 outings. About 124 mL is what I measured coming out of the RX can. That's over 4 ounces...