[Throttle Crazy]

Originally Posted by 94cobra69ss396

Throttle Crazy is the Assistant Service Manager at a Chevrolet dealer. That's how he knows the service intervals.

I am the Service Manager. Paul is Service/Body shop Director.

[BRIAN]

Originally Posted by Vettezuki

Separate from the viscity@temp and things like TBN rating?

Sorry forgot to answer this.

Among other things yes. A 5w-30 mineral oil will still has about the same characteristics of a 5w-30 synthetic. Difference is in the morning the synthetic will be less honey like. Also the synthetic will probably get to opt temp slightly sooner. TBN will depend on the oil additives present in the bottle from the get go. Difference here is how long they last before they break down from heat, and well synthetic can take the heat for longer

[BRIAN]

Originally Posted by Throttle Crazy

I am refering to the GM service interval for the 1000 series Allison in the Silverado. Medium duty, heavy duty and motorhomes with Allison transmissions are now coming with Allisons Tran-synd synthetic fluid and the service interval is longer on the fluid but the spin on filter replacement should stay the same. The Trans-synd fluid works great. When I get a customer who does alot of heavy towing and complains of trans getting hot while pulling grades, I recomend flushing out the trans. switching to Trans-synd and we convert to the medium duty pan and filter for more fluid capacity. Customers have told me they see as much as a 40 deg. F temp decrease.

Good stuff, especially from a dealer.

[Vettezuki]

Originally Posted by BRIAN

. . . Among other things yes.

Like what?

A 5w-30 mineral oil will still has about the same characteristics of a 5w-30 synthetic. Difference is in the morning the synthetic will be less honey like.

What do you mean honey like other than measured viscosity.

Also the synthetic will probably get to opt temp slightly sooner.

I can imagine this is possible but do you know why?

TBN will depend on the oil additives present in the bottle from the get go. Difference here is how long they last before they break down from heat, and well synthetic can take the heat for longer

That makes sense.

[enkeivette]

Originally Posted by BRIAN

Now until you find somewhere to start I won't know where to begin helping you to understand or helping make myself look more and more like an ass. I'm pretty sure that's what everyone thinks of my work here so far.

I don't.

[enkeivette]

Ben, have you seen my FB quote?

[big2bird]

Originally Posted by BRIAN

LOL I thought the same thing when I first started out. It's even harder to explain to the older community because of course they've been doing this much longer and "know" what works for them.

Now until you find somewhere to start I won't know where to begin helping you to understand or helping make myself look more and more like an ass. I'm pretty sure that's what everyone thinks of my work here so far.

Okay. Let's begin with "Changing tranny fluid too soon will accelerate wear."
(I may be mis-quoting/paraphrasing here).

I'll abstain from the engine oil discussion that has been beaten to death elsewhere.

[Vettezuki]

Originally Posted by enkeivette

Ben, have you seen my FB quote?

The one about a new law?

[enkeivette]

Originally Posted by Vettezuki

The one about a new law?

No, on my page. Left margin.

[Vettezuki]

Originally Posted by enkeivette

No, on my page. Left margin.

I knew you were a man of refined culture and taste.