Auto Repair - Roadshow forum

Question

Drop Oil Pan for Cleaning Low-mileage Caddy?

by Katznjammer / January 9, 2018 1:08 PM PST

I have picked up a 1994 Cadillac De Ville with only 29,000 Km (18,000 miles). It has been babied and regular maintenance, but still, obviously sat unused for long periods. I am taking it in to have coolant flush, oil change and wheel balance (only things that look obvious need attention on it.)

However, I was wondering if I should have the whole oil pan dropped and thoroughly cleaned out. It is three hours of shop time for that, but I don't mind if it is worth it.

The oil looks nice and clean on the dipstick, but I wonder.

Everything else checks out well. But would appreciate any other tips other than mention above that you might do to such a vehicle. Battery is recent, Tires are recent.

Thanks.
Dave.

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All Answers

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Answer
Nice Ride
by itsdigger / January 9, 2018 1:15 PM PST

Even though it's low mileage , it has set a long time and gunk can settle in the oil pan.
I would drop the pan for peace of mind. I would do the same on the transmission and change that filter as well.

I'm no pro but love old cars and treat them with loving care. I wish I had that car Love

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Answer
easiest cleanout of oil pan is...
by James Denison / January 9, 2018 1:54 PM PST

...the kerosene flush. Put in a quart of oil, add 4 quarts of kerosene, crank the car and let idle for a while, but DO NOT DRIVE it. Put on new oil filter. After it's warmed up and run 10-20 minutes turn off, drain, change oil filter again and refill with oil.

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True but,
by itsdigger / January 9, 2018 2:08 PM PST

A vehicle at this age would likely need new seals as they dry out and get brittle.
Running the kerosene would find any leaks for sure...

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Answer
Oil pan
by landdchamp Forum moderator / January 9, 2018 3:25 PM PST

Hi, Dave; Dropping the oil pan is 'probably' the 'best' solution, but I don't think that it's cost effective. I've never been a fan of 'engine flushes' as they tend to create leaks as "itsdigger" mentioned. If it were me, I'd just change the oil and filter after a couple hundred miles, inspect, then again at 1000 miles. You should be good to go, then. Back in the day, we'd put in 4 qts. of oil and 1 qt. of trans. fluid, run it for 50 miles, then change the oil and filter. Worked for noisy lifters, most of the time. The trans. fluid is high in detergents, but then again, can cause oil leaks from cleaning it 'too' good. I don't like the idea of kerosene or diesel as I don't believe they lubricate well enough. Changing the oil frequently is the cheapest insurance. I've never owned a vehicle that leaked oil. I believe, from keeping the oil clean.
Good luck, whatever your decision.
Loren

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I do agree with you
by itsdigger / January 9, 2018 7:17 PM PST
In reply to: Oil pan

But this Caddy is a cream puff and deserves boutique treatment Silly
I would give it the deluxe treatment and a nice wax job Mischief

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I do agree with you
by itsdigger / January 9, 2018 7:17 PM PST
In reply to: Oil pan

But this Caddy is a cream puff and deserves boutique treatment Silly
I would give it the deluxe treatment and a nice wax job Mischief

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To the Mods
by itsdigger / January 9, 2018 7:41 PM PST
In reply to: I do agree with you

Something fishy is happening ,
Double post's
A pop up said " there was a problem submitting your post , try again later " ,
I did try again and it took awhile but another pop up said " You post was successful " ( or something like that )
And than , the double post happened
And now even vote on a post it get the same pop up about sorry but there was a problem
And will happen again when I submit this post ( Maybe )

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