Idemitsu ATF Type HP Automatic Transmission Fluid for Subaru - 1QT, Red, (30040099-75000C020)

TL;DR: works just as intended and IS the manufacturer of the Subaru HP variant. Idemitsu HP is the same. Its what Subaru recommends over Dexron since 2006 for these transmissions. To give a little background: My center lockup clutches (MPT if you know) were binding in turns which often happens in automatic Subarus when the oil gets old or dirty. It feels like a shutter when you make tight turns, and you can hear the tires binding up. Its 50/50 that or Duty C solenoid went bad. Need to fix it or risk burning the MPT clutch pack. One of the first things that should be done, even if the oil is dark, is to give it a change. The oil pan holds 5 quarts, the transmission itself holds a total of about 15. Subaru service bulletins state( in 2006) that after '06 they do not recommend Dexron, they recommend Subaru ATF-HP. This is that very same HP formula. Idemitsu makes the blue Subaru bottles of the same stuff but at about half the cost that Subaru sells their blue bottles at. Well, one change is all it took. One change and the MPT broke free within the first tight turn. The transmission never shifted or felt better. No more hard shifts, no more shift hesitation. No more solenoid buzz. no more " idk which gear to choose" syndrome. I will change it 2 more times after periods of about 500 miles to get all of the fluid new, just as many in the community recommends. If you see glitter in your old oil, time to get it rebuilt. I did not and its the only reason why i changed it even though it was dark and didn't re-add some of the old oil back( often done because that glitter is usually clutch material and without it, you will slip gears). No clutch material from any of the MPT or drive gear clutch packs in the oil and no broken teeth in the gears. If this oil change doesn't help with MPT bind, could be your Duty C solenoid but that usually throws a code and makes your ATF TEMP light blink 16 times when you start the car. If its Duty C, you will need more of these as you have to drop the pan and do a little work.

Drained the transmission pan of a 2010 Subaru Forester (90k mile) and refilled with this product. Went for a drive. Transmission shifted smoother. Well worth it. BTW the Subaru service manual lists Idemitsu ATF Type HP as an alternative to Subaru ATF HP.

Excellent. OEM fluid. Do not substitute generic ATF.

Exactly what I needed for my Subaru. Came the same day I ordered it. Would definitely purchase again

Was perfect replacement for my legacy transmission.

Perfect

Product arrived prompt. Works well to replace transmission fluid

If you have a 4EAT, THIS is what you need. Mine had a rough shift from first to second gear. Opted to swap the fluid out for this one and went for a test drive. Smooth!! If you have the spin on filter on your transmission and you've never changed it, do so as well and Use OEM (superior feeling when the car is going through gears based on my experience) or the Beck/Arnley variant.