Cadillac 1993 Fleetwood Owners Literature page 229

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Maintenance when Trailer Towing
Your vehicle will need service more often when you're pulling a trailer.
See the Maintenance Schedule for more on this. Things that are
(don't overfill), engine oil, axle lubricant, belt, cooling system, and brake
adjustment. Each
of
these is covered in this manual, and the Index will
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help you find them quickly. If you're trailering, it's a good idea to review
these sections before you start your trip.
Check periodically to see that all hitch nuts and bolts are tight.
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especially important in trailer operation are automatic transmission fluid
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