Injector problem or just OCD kicking in?

[JohncJordanIII]

I use it but that's because I like my gauges and dash lights/pinging noise to finish before starting. It's a habit working on commercial rigs and taking my Class A CDL lol

 

[Zoomschwortz]

So far, the engine doesn’t seem to start any faster with or without the grid, but on these cold mornings, the engine is quieter when I use the grid.

 

[Prairie Dog]

It wont make it start any faster unless it's extremely cold. Above those temps, it just helps with emissions.

 

[Tuesdak]

Sorry, but unless he busted the block, the bell housing, and the transmission case, I have to throw the BS flag on this one.

I too, would like to understand how eng coolant can get into a manual trans?

TY,
Scott

I can only guess how it entered the manual transmission ... When the engine was pulled for rebuild we found an ugly prior patch job from when it failed: It had a sleeve in #1, the head looked like craters on the moon for #1, aftermarket piston for #1, and a bent pushrod. I suspect the cooling system let go during whatever hammered up the #1 so bad may have allowed some to get in the trans. Ugly oil sample below so no surprise when I later had the NV5600 rebuilt at the same time as the engine to find it had flat syncros (worn out) and bearings starting to mark up. Keep in mind the Viscosity of Amsoil Syncromesh is 10.1 at 100C and this sample is at 5.0 for whatever was in it.

 

[Zoomschwortz]

I can only guess how it entered the manual transmission ... When the engine was pulled for rebuild we found an ugly prior patch job from when it failed: It had a sleeve in #1, the head looked like craters on the moon for #1, aftermarket piston for #1, and a bent pushrod. I suspect the cooling system let go during whatever hammered up the #1 so bad may have allowed some to get in the trans. Ugly oil sample below so no surprise when I later had the NV5600 rebuilt at the same time as the engine to find it had flat syncros (worn out) and bearings starting to mark up. Keep in mind the Viscosity of Amsoil Syncromesh is 10.1 at 100C and this sample is at 5.0 for whatever was in it.


View attachment 118686

I don’t know anything about the NV5600.
Is there a breather that could have allowed anti-freeze access into the transmission when the engine blew?

Again, I don’t know anything about NV5600, but I have had transmissions that were a real pain to get gear oil into. Is it possible that the previous owner used some kind of device to pump gear oil into the transmission that had previously held antifreeze or possibly the gear oil sample was taken from a pan that at one time had antifreeze?

Just some ideas
Ken

 

[GCroyle]

Just as a trivia point, the 1999 up F-Series 73L ZF trans has a cooler in the trans and lines running to radiator just like an automatic. Been there, big trans.

 

[Prairie Dog]

There's no path I know of between the two components. I wonder if there was any chance the trans was submerged in a flood of some sort.

 

[Tuesdak]

I had pulled the sample myself so, yeah, the two ideas of contamination during oil adding/change, got in through breather, shift tower, or other leak is all we could guess. I also assumed at the 50K oil life and wondered if it had ever been changed by the PO.

Back to my point, An oil sample can feel like a complete waste of money when everything is fine or it can help you decide to save some money in the future when it shows you a sample this bad or other problems. Although widely known for this trans to change the oil way more often: the samples I did proved the oil needed to be changed often due to it's viscosity shearing down. Aside of the coolant spike the above sample's viscosity is the biggest concern showing the oil has failed. Bad is backed up by the high wear metals...

High silicon in this next sample could be the RTV gasket maker I used on the PTO covers during the oil change. (We checked everything for a dust/dirt leak.) I installed the PTO coolers at the 101,979 oil change.

Here is a sample after the trans was rebuilt (at a little over the 121,000 miles sample above) and the string filter kit, PTO cover, added in place of 1 cooler.

 

[Prairie Dog]

Silicon and silicone are different things. Silicon is basically dirt.

Cheers,
Scott