Idemitsu ATF Type HP Transmission Fluid for Subaru – 5 Quart

Great way to get OEM fluid for my Subaru. Well packed and a reasonable cost. I will use this vendor again.

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.

I love this stuff, I should of bought this stuff sooner vs buying what was at Autozone. I bought STP brand and it didn't work very well. Once I swapped it out for this, it runs VERY good. Feels like it should of done! I have a Subaru 1998 Legacy Outback with the Phase 1 4EAT Transmission and this fixed my slipping and poor shifting Transmission issue almost instantly. I mean, it was so bad it was slipping while climbing up a hill. This fluid doesn't do that at all, it feels like factory new and it shifts smoothly. If you need fluid and have to flush it out. PLEASE, buy this fluid. It works, and it will do the job properly.

It’s the right fluid for the job . 07 outback second time changing out the transmission fluid and external filter. Even though this is a 5 qt jug you still need another qt to fill what you drained. I did drop the pan this time but internal filter screen just needed to be cleaned also the magnet. Was no gaskets on the pan just sealant from the factory, so no gasket needed if you don’t have one .

I used this fluid for a transmission service where the vehicle called for Type HP fluid. Shifting felt smooth afterward and I did not notice any leaks or issues. The fluid looked clean and poured easily. It is also significantly less expensive than buying OEM fluid directly from the dealer.

My preference is to stick with what the manufacture recommends in putting into my Subaru. Although there are universal ATF out there that states that it meets ATF Type HP specs, I feel more comfortable in using what the factory put into my 2011 Subaru Outback's transmission from the onset, and Idemitsu ATF Type HP has never proven me wrong. I do a complete ATF fluid change every 30k miles by draining the transmission via the drain plug and also running the engine with the transmission cooler line disconnected and routed into a container to get nearly 100% of the fluid drained and changed to fresh Type HP ATF. My Outback now has over 150k miles with its original transmission, so obviously maintenance is a huge key to longevity. The fluid isn't cheap, but it is exactly what the manufacture recommends without having to go the universal ATF route.

It arrived early and in great condition. Recommend to others to also order from this seller. Product is as advertised.

Good

A much more cost effective ATF for Subaru owners. Same as OE Subaru as far as I understand...

Solved my hard shifting problem. Still have to do two more drain and fills to solve torque converter shudder.

Looks good.

Transmission working much better.

It's what is recommended in the Subaru owners manual. It's a little on the pricey side