Print Page - What fluid does the tranny take on a 4104 ?

Title: What fluid does the tranny take on a 4104 ?
Post by: Gerry4104 on April 03, 2012, 03:30:05 PM

What do you guys recomend... TIA

Title: Re: What fluid does the tranny take on a 4104 ?
Post by: roadrunnertex on April 03, 2012, 04:45:47 PM

Same oil as the engine.
Delo 100 40 wt

Title: Re: What fluid does the tranny take on a 4104 ?
Post by: Gerry4104 on April 03, 2012, 04:49:05 PM

I know i could look it up, but as long as i'm here what are the capacitys for the engine and the tranny....

TIA

Title: Re: What fluid does the tranny take on a 4104 ?
Post by: zubzub on April 03, 2012, 05:15:50 PM

the '04 uses a special mineral oil (motorcycle 50W racing oil has same spec) someone will chime in with the proper info. It's in the book, just trying to use my memory.

Title: Re: What fluid does the tranny take on a 4104 ?
Post by: gus on April 04, 2012, 08:00:36 PM

The book says Aviation Grade 50W but I see no reason 40W won't work. This aviation grade in the book is actually mineral oil which all aircraft once used but it is now called "break-in oil" for newly overhauled aircraft engines. It is expensive but I had some left over that I got by mistake.

Just don't ever use 90W, happened to me once at a bus place that should have known better!

Title: Re: What fluid does the tranny take on a 4104 ?
Post by: bevans6 on April 05, 2012, 03:24:35 AM

I use synthetic 50W transmission (not gear) oil, in the hopes of easier shifting into first gear. I agree that 40W engine oil is fine.

Brian

Title: Re: What fluid does the tranny take on a 4104 ?
Post by: gus on April 05, 2012, 07:16:24 PM

The reason these old bus and truck trans use light oil is they have oil pumps built into the input shafts - my old '50s GMC big trucks use the same stuff.

Title: Re: What fluid does the tranny take on a 4104 ?
Post by: WEC4104 on April 06, 2012, 06:20:13 PM

Some folks have experienced smoother shifting using the synthetics, however your transmission seals have to be in good shape. Switching to synthetic has created leaks in trans that were "tight" with dino stuff.

Title: Re: What fluid does the tranny take on a 4104 ?
Post by: gus on April 06, 2012, 06:33:26 PM

Synthetics also break loose a lot of sludge and crud that has stayed in place for years.

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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: Gerry4104 on April 03, 2012, 03:30:05 PM