MCI Coolant drain points

[peterbylt]

I am in the process of changing the Coolant on my 1989 MCI 96A3, 8V92TA, No issues with the cooling system, just have never changed it.

Reading the Manual on coolant change there are quite a few drains and bleeder valves throughout the system, I have found all of them except the one called Suction Line, see figure 6-14 in the included photo of the MCI manual, anyone know where I might find that one?

Also, I discovered that I have a Coolant filter hidden in the front right side of the engine bay attached to the forward bulkhead, has never been changed by the looks of it, any parts number has faded to be unreadable, screw on filter, The manual lists it as MCI Part Number 6f-8-131.

I have not found any source for it; anyone know of a cross reference to a more available part that might be locally available?

The coolant I purchased is Power Cool from our local Detroit Diesel dealer.
   
Any help appreciated.


Peter

[Dave5Cs]

cross reference under DD

https://www.fleetpride.com/parts/lubrication-filtration/engine-coolant-filters/coolant-filter/fleetguard-coolant-filter-wf2051

[luvrbus]

With DD Power Cool the chemicals are in the antifreeze (pre-Charged) you buy a non chemical filter replacement for use with Power Cool, NAPA has those  lol 25 bucks

[peterbylt]

Thank You for the replies.
Picked up the filter today at Fleet Pride.

Peter

[peterbylt]

A follow up in case anyone is interested or anyone finds this in a search.

I never did find the Suction Drain, The most useful of the drains were the two on the return line, on the bottom back directly under the water pump and the Heater core drain on the bottom of the main heater core accessed through the front Bay.

The rest of the drain points must have drained out the back, nothing but a few drops came out when opened.

The front heater core bleeder in the dash board probably helped venting while draining and filling.

Everything else pretty much drained out the bottom back.

The MCI manual says there should be 24 gallons, I drained approximately 20 gallons.

System must retain at least a couple gallons that does not drain.

From what I could see it was pure water, makes me happy I changed it.

For just water it was remarkably clean, lightly rust tinged.

There were no cooling system issues, only reason I changed it was because I did not know what was in it and I might end up in cold weather over Christmas (South Georgia).

I flushed with Tap water, took 3 flushes with starting it up and running to operating temperature each time until it drained clean.

I purchased 12 gallons of Power Cool Concentrate from our local Detroit Diesel dealer, at least a dollar a gallon cheaper than anything else I could find, and 12 gallons of distilled water from our local Publix.

The initial fill starting with 2 gallons straight concentrate and then alternating gallon of Concentrate, gallon of distilled water, took 18 gallons to the middle of the sight glass.

Over the course of a 200 mile trip it took another 2 gallons as the trapped air burped out and has remained stable in the sight glass since.

I took a sample to a friend who runs a local garage, he said it tests to just over 50% and should be good to 75F below.

As to the Coolant filter, what I thought was a coolant filter ended up being a hydraulic fluid filter for the power steering, there is no coolant filter that I can find, Fleet Pride let me swap the coolant filter for a hydraulic fluid filter that I have not changed yet.

Peter