Ronzuki wrote:The Suzuki TSB on the subject is calling for between 15 -16k...
This is not what the TSB says . The TSB says that the Service Manual says that the fluid is supposed to be "inspected" and the level checked every 15625 miles ( SM actually states every 30000km (18k miles) or 24 months). The TSB says that the CVT fluid may be deteriorated after 30000 miles. Hence, I would take 30000 miles as the "severe" interval the TSB states for CVT fluid change.
You are technically correct. It doesn't, exactly.
However, as with most things in life, it's a matter of what is not being said in that TSB where the issue lies. 30k (the general norm for AT fluid service) would have been perfectly fine if they'd have stated that in the service schedule from the get go back in 2010. The dealers had no idea why Suzuki had CVT pan filters and gaskets in thier minimum required service parts inventory when there was no regularly scheduled service called for way back when. My dealer's parts manager had sent them back to Suzuki because they were not moving any and therefore deemed were not needed. Now 9 years later and 80-some thousand miles (for me, and is on the light side for age) and with a trans/converter full of cooked fluid, I was pretty much way beyond 30k 'severe' and that number is largely water under the bridge. Inspect the fluid every 15-18k/24mos...OK, great, how exactly, do you do that w/o draining it? The pooch has already long been screwed. w/o admitting any guilt or liability in the TSB, Suzuki's made a nebulous suggestion of "inspecting" the fluid. Fabulous. Inspect for what, exactly? And how, exactly? Pulling out the dip stick and wiping it on a rag? It's not engine oil, its thin and offers no indication that there's a problem, or not. Check the level? Not a TSB issue so why even mention something as ridiculous as that?. 15,625 miles...where'd they come up with that specific number? Not 15,000 or 15,500 but 15,625. Pretty specific number... Again, no explanation. If ya can't dazzle with brilliance, baffle with bullshit.
I could drain mine right now, and after only ~5k miles on the 3 drain/fill fluid service, it will most definitely come out a very dark smelly brown. A wise old mechanic once told me in my youth that "the solution to pollution is dilution". That's what the TSB is saying to me, loud and clear, with the nebulous info contained in it. Keep diluting the over-cooked fluid that should have come out 50-60k ago (again for mine) w/ fresh fluid and maybe there's a chance the trans will last longer for you. That's my take=away from the TSB. If 30k is 'severe', then what about all those w/ 100k+ on them that have never had it serviced? That would be known as 'catastrophic' because many are failing at that mileage.
I'll be repeating the process again in another 10-15k because I love the car and enjoy the hell out of driving it. I'll be doing the wife's SX4 for the first time at 56-57k here soon. There's nothing severe at all about the JF011E being applied in that much lighter and less powerful car, nor the way she drives it (polar opposite of how I drive the Kiz). So she's well beyond severe duty aye? We'll see what that fluid looks like when it comes out (inspection part of TSB). When it comes out, something has to go back in right?
2010 Kizashi GTS, CVT, iAWD (3/10 build date)
2011 SX4 Premium Hatch, CVT, iAWD (12/10 build date)
2018 Mazda CX-5 iAWD Touring
2014 Wrangler JKUW (GONE, traded
1991 Samurai, 5-Speed, EFI, Soft-Top (