Hand pump for MTF change - clean vs buy?

[rationull]

I'm going to do an MTF change on my Honda this weekend. I have one of those little plastic hand pumps that screws onto the top of an oil bottle that I used several years ago for a different car and it's sat in a plastic bag ever since.

Previously I used it to pump GL-4 gear oil. This car specifies Honda's branded MTF which I'm guessing is closer to motor oil given the manual allows using motor oil instead of MTF for "temporary replacement" and older models actually spec'd 10w30 or 10w-40 motor oil in the transmission.

I know the little bit of fluid mixture this could cause is probably no big deal but I wanted to do something about it anyway, so I ran some VM&P Naptha through it tonight to clean it out. Presumably the Naptha will dry in time and won't contaminate the MTF. It probably didn't get all the way clean though.

Should I just get a new pump for $5 to be on the safe side or use this one? It's not that I want to save the money in particular, just seems like a waste to throw this one away unless there's a reason.

 

[PandaBear]

The only time you need to worry is if a trace amount from plastic porosity will cause problem, since you are not doing anything with food, I'd say just clean it and use it. MTF/GL4/oil are similar enough that cleaning it and reusing it should be fine.

 

[Herz]

I use my hand pump for my focus that I use Amsoil, my sierra that I use a synchromesh amsoil in, my trucks diff that uses synpower, my jeep that uses dino valvoline, dont worry bout it lol.

 

[bepperb]

I wouldn't buy a new pump.

But really, I prefer a funnel and a 3 foot hose for Honda manual transmissions.

 

[dparm]

Kerosene or brake cleaner should be fine. Blackstone recommends either of those for their hand pumps.

 

[stockrex]

menards if you have them near you, has the pump for few $$.
else, I like the 3 ft clear hose and funnel, just put some glue at the end of the funnel

 

[mechtech2]

Debris is a problem. A bit of old oil is not.

 

[rationull]

Originally Posted By: dparm
Kerosene or brake cleaner should be fine. Blackstone recommends either of those for their hand pumps.


Did I make a mistake with the Naptha, then?

 

[mechtech2]

Naptha is great. It is dry cleaning fluid.
Basically, it leaves no residue.
The only downside is that it is expensive compared to common solvents.

 

[lipadj46]

Naphtha can be used as a dry cleaning fluid but I would not call it a dry cleaning fluid. Naphtha, which is a general term, is used for all kinds of things.

 

[Dave Hess]

I just use the top of a gear oil bottle cap connected to the quart of MTF and some tubing.

On the Civic you can simply remove the reverse sensor from the top of the trans and refill from above.