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1978 Eldorado 425
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3 Posts
Discussion Starter #1
Hello!
I'm not very good at classic cars! This is our first retro car.
Friends please help pick up oils and fluids for this car...
Engine, transmission, axles, antifreeze ...
In your opinion, how often do you need to change fluids in this car?
I'll be very grateful! Thanks!

Engine: 425 CID V-8, 7.0 Litres
Transmission: 425 Turbo Hydra-Matic
 

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Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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70,295 Posts
The recommended fluids and maintenance intervals would be in the owner's manual - either in the glove box or from one of our online sticky threads.

Welcome to CF !!! Are older vehicle parts difficult to find in Ukraine ?
 

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Super Moderator
2010 DTS
Joined
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87,286 Posts
Welcome

Oil - I'd use a 10W30
I forget what intervals they recommended back then, but with todays oils you should be fine with a 5,000 mile interval.

Trans fluid - The manual will probably say Dexron III, but it is out dated, so use Dexron VI (backward compatible).
Coolant - Conventional or long life green will work.
 

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1978 Eldorado 425
Joined
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3 Posts
Discussion Starter #4
Are older vehicle parts difficult to find in Ukraine ?
In Ukraine, it is very difficult with spare parts for retro cars.
Anthers, gaskets, rubber bands fit with some new cars.
But for this we need specialists who can definitely pick them up ...
 

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1978 Eldorado 425
Joined
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3 Posts
Discussion Starter #5
Welcome

Oil - I'd use a 10W30
I forget what intervals they recommended back then, but with todays oils you should be fine with a 5,000 mile interval.

Trans fluid - The manual will probably say Dexron III, but it is out dated, so use Dexron VI (backward compatible).
Coolant - Conventional or long life green will work.
Thank you very much!
What do you think about 10W40?
Although on the other hand, it is a low-speed motor ... This is not necessary.
 

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Super Moderator
2010 DTS
Joined
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87,286 Posts
I had very bad luck with 10W40 oils so I stay away from them. That said, it was many years ago and todays oils are much better. 10W30 should be more than adequate, but if you feel the need for 10W40 or that is a personal preference, it should be just fine.

P.S.
For what it's worth, I still use 10W30 in a '69 Road Runner with 96K original miles.
 
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