3K trip over 2 weeks, should I do this service or wait

[mbrund]

I am about to take our WB on its first long haul trip which will
total about 3K miles in all.

I am going to change the engine and transmission oil and assocaited
filters. I am carring extra primary and secondary fuel filters with
me.

The real question is, the prior owner admitted that in the 10 years
he owned it that he did basic oil and trans service but never did any
coolant service. So that scares me, and all though I have not
checked, I can promise it is out of balance.

I should note here, that I am not currently having over heating
problems. Just want to get my coach caught up on service.

Should I dump the coolant, flush the system (I have Permatex Heavy
Duty Radiator Cleaner, bascially Hydrochloric Acid), rinse, repeat,
then add 12 gallons antifreeze, 12 gallons distilled water, and 7
pints Pencool 2000?

Or should I test it, get it in balance, take the trip and do the
coolant service when I return?

I am a little concerned that flushing the system may cause leaks to
occur that are not currently known and that would either prevent my
trip or cause issues on the road. Looking for some advice from the
community.

Michael Brundridge
1992 WB40
Georgetown, TX