UOA '18 Honda CR-V CVT with TAN, 24.7k mi

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Dec 23, 2020
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This is from the factory fill. Vehicle and CVT fluid miles both at 24684. Drained ~4 qts and replaced with Honda HCF-2 (which I did a VOA on). Will post the VOA when it comes through.

Considering a drain and fill only replaces about 1/3 of the oil, I'm not sure how I feel about pushing it beyond 25k miles before changing it again (yes, I did check that I was interested in extended drain intervals, which is why BS recommended 27k). It seems as if a wiser course, with 2/3 of the oil being >25k and 1/3 being new, is to go with progressively shorter OCI two more times before possibly going back to 25k intervals. Thoughts?

The drain and fill process is pretty easy on these guys, so maybe a standard interval of ~15k-20k miles (roughly 2 years for us) would allow a fresh supply to replace the progressively older bits of oil at a healthy rate. The only downside to more frequent intervals is the HCF-2 fluid is stupid expensive (over $10/qt unless you buy in bulk).
18 CRV CVT 100521.jpg
 
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Jan 9, 2010
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Thanks for this post as it is timely for a car I service.
A friend's '19 CR-V is a little over 20K. I will pick up some HCF-2 or equivalent and service the transmission.
 
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Feb 6, 2009
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Was there any noticeable change after changing fluid? Was it working just fine with the sheared fluid?
 

MolaKule

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Jun 5, 2002
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Iowegia - USA
Most CVT's have a Torque converter clutch so when that device is engaging/disengaging there will be a shift.
 
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