What ATF do you use for your 4l60 rebuild? And can Anyone recommend a good line pressure tester. Looked on amazon and they have bad reviews on some and some good. What do you use?

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10-07-2018, 11:57 AM

Pro Built Automatics

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Re: Recommended ATF for rebuild.

For non-synthetic, Mobil, AC Delco, Aamco (Mobil repackaged). For synthetic, Amsoil & Redline.

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10-08-2018, 10:34 AM

GeneralDisorder

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Car: 86 Imponte Ruiner 450GT, 91 Formula

Engine: 350 Vortec, FIRST TPI, 325 RWHP

Transmission: 700R4 3000 stall.

Axle/Gears: 9 Bolt Torsen 3.70

Re: Recommended ATF for rebuild.

We run Amsoil in everything and it's never let us down yet. They have some really eye opening case study's with Las Vegas taxicab's wherein they tear down the transmission and show all the (lack of) wear to every component after a measly 183,705 miles. Oh yeah - they never changed the fluid during that time either.

https://www.amsoil.com/lit/G3118.pdf

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