Re: transmission/overdrive oil for R-9

Posted by West Peterson On 2008/3/28 12:04:55

I was thinking that putting in the thicker oil would be my tell-tale. If the noise continues at the same "tone", I would then look into different areas for the source. If the tone changes or is eliminated, my search would end. But, as you state, my work begins.
You see, I have no idea where the noise is eminating, with several long-time experts riding with me and being a bit puzzled. When I was looking at an original pieces of Packard literature this weekend, that's when I found this service piece that goes along with the film strips they had for mechanics. The thicker oil was only the first step... the next steps are not going to be fun, but at least I'd know I've tracked down the source.
It's not a constant rattle, just at certain speeds, which is what the service slide-show was talking about as well.
I may have put in the 85-140 as you have. At this point, I don't remember. I do remember the 80 or 85, number, but perhaps forgot about the 140. I'm going to give the 250 a shot and I'll let you know how it turns out.