Really wish ppl would stop bringing me trucks with hydraulic fluid in trans

peezy555 · Apr 4, 2024

Erik the Awful said:
"It's the same stuff, innit?"

There's a certain point where you look at the customer and say, "If you don't trust me, then you can take it elsewhere." The other side of this is that you have to be trustworthy. Integrity first.

I do all the time. The way their eyes drift off when I’m explaining to them how automotive system work and how to diag them. I can literally read their thoughts and they are like yeah right this guy feeding some bs and trying to rip me off. It hurts I can’t say that it doesn’t. The college degree, the dedication, the absolute quest for knowledge that I have spend half my lifetime knowing just seems like a waste at this point

peezy555 · Apr 4, 2024

95burban said:
I’m all ears….look above but please don’t take my word for it. GM has this printed in its service manuals

95burban · Apr 4, 2024

@peezy555 what is wrong with using rotela?

peezy555 · Apr 4, 2024

95burban said:
I speaking about the rotela.

The same answer to previous reply also applies to this question. For one thing a “heavier weight in oil (viscosity) does not help with wear as a matter of fact it does the opposite. It causes extra work and heat from the engine working harder to circulate oil

NickTransmissions · Apr 4, 2024

peezy555 said:
So apparently the same ppl that use rotella oil for high mileage vehicles use hydraulic fluid for trans fluid. Cannot convince customer that the reason that he is having trans issues is bc of hydraulic fluid that the last shop filled with. I’m like really…..really??? Shops like that make my job so difficult and makes me want to give up hope and change my career and not be associated with such ignorance

Yep, it's unreal what you see in this business, lol. And just when you think you've seen it all, something else comes in the door to let you know that you haven't seen anything yet...

Do you rebuild transmissions?

peezy555 · Apr 4, 2024

PolarBear said:
I don't get it. I've used John Deere HyGard in performance TH350,TH400, 4L60E and 4L80E builds for years. The trans runs 20-30* cooler, survives alot longer under extreme conditions (racing, pulling, etc.) It even tightens the stall up by 2-300 rpm, shifts faster and cleaner.

What factual proof, do you have aside from "The OEM wants fluid X or fluid Y"?

That’s most ppl reactions to my statement. 9 outta of 10 ppl say the same thing. I say it may have worked in A situation in X number of miles for Y number of ppl but if you bring this equation into the perspective of all vehicles ever made in all time The latter far surpasses the initial opinion

peezy555 · Apr 4, 2024

NickTransmissions said:
Yep, it's unreal what you see in this business, lol. And just when you think you've seen it all, something else comes in the door to let you know that you haven't seen anything yet...

Do you rebuild transmissions?

Yes only 4l60e not saying that I couldn’t do others just don’t wanna get anymore tools that I don’t use. When the demand is so high for those with ppl doing LS swaps.. plus I’m bow tie till always been. Just sad to see ac delco starting to price gouge like motor craft been doing forever

Caman96 · Apr 4, 2024

Found this, seems like a good explanation:
“
ATF is very complex fluid compared to normal hydraulic fluids. The first difference is the friction properties. ATF have to allow certain friction for clutch and at the same time low friction for other components. Have to balance static coefficient of friction and dynamic coefficient of friction. Conventional hydraulic fluid use ZDDP for anti-wear properties, but ATFs contain very small quantities of zinc additives (ZDDP). ATF also have fairly high quantities of detergents. They are VI improved fluids and contain high dose of VI improvers. May lose viscosity due to shearing of VI improvers. Above all, different OEMS have different requirements and is an OEM specific fluid compared to hydraulic fluids.”

peezy555 · Apr 4, 2024

taught myself everything I know about em when had to fix my Yukon. I’m ASE certified in auto trans and since 2019 since I started thin journey I’ve got about 2 dozen trans that I built on the road today. That’s not accounting for the dozen that burnt up shortly after.. most of them was incorrect installation by customer causing failure but that’s a hard thing to argue about and I found myself taking the L on those situations more times than not. So nowadays I only rebuild for my need and no one else

95burban · Apr 4, 2024

peezy555 said:
The same answer to previous reply also applies to this question. For one thing a “heavier weight in oil (viscosity) does not help with wear as a matter of fact it does the opposite. It causes extra work and heat from the engine working harder to circulate oil

I’ve had great luck with it, and so has my machine shop (they build nitro funny car engines) they did the machine work on my alky bbc in my boat. They said to use rotela. My nitrous small block, used rotela. My factory DOD lifters, almost 200k miles uses rotela. All the 12cylinder stationary cats and waukesa that run 24hrs a day at 100% load uses a similar bulk oil, in the almost 18 years of being around those engines and rebuilding them (oil field mechanic, we did this **** in the rain and dirt) bearing wear wasn’t really an issue.

Really wish ppl would stop bringing me trucks with hydraulic fluid in trans

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