1998 Cadillac Eldorado Oil Type & Capacity
4.6L · Tire Size · MPG · Factory specs and recall history
- Engine 4.6L
- Fuel Gasoline
Instant answer
7.5 qt of SAE 5W-30
Oil capacity
7.5 qt
Refill volume including a new filter
Oil viscosity
SAE 5W-30
SAE grade the manufacturer specifies
Front tire size
225/60R16
Factory fitment, front axle
Change interval
7,500 miles
Manufacturer maximum between changes
Trims covered
These specs resolve across the model year as a whole, so they cover the one trim the catalog holds for it:
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Oil type and capacity, tire size and EPA fuel economy for the 1998 Cadillac Eldorado, plus the recall campaigns NHTSA has filed against this year, make and model. Every figure says where it came from, so you can tell a published specification from an estimate at a glance.
Engine oil
1998 Cadillac Eldorado oil type and capacity
The 1998 Cadillac Eldorado takes SAE 5W-30 engine oil, about 7.5 qt with a filter change.
- Oil viscosity SAE grade the manufacturer specifies
- SAE 5W-30 Verified spec
- Oil capacity Refill volume including a new filter
- 7.5 qt Verified spec
- Change interval Manufacturer maximum between changes
- 7,500 miles Verified spec
- Or every Whichever comes first
- 12 months Verified spec
Know when your Eldorado is actually due
These are the numbers for the model year. Add your own Eldorado and we track oil life against your real mileage, then email you the week it is due.
Tires
1998 Cadillac Eldorado tire size
The factory tire size on the 1998 Cadillac Eldorado is 225/60R16.
The placard inside your own driver's door is the authority for pressure: it is set for the tires that car actually shipped with.
- Front tire size Factory fitment, front axle
- 225/60R16 Verified spec
- Rear tire size Factory fitment, rear axle
- 225/60R16 Verified spec
- Front tire pressure Cold inflation, front axle
- Not published
- Rear tire pressure Cold inflation, rear axle
- Not published
Seeded rows exist for this vehicle but none carries this field, and there was too little to estimate from.
Seeded rows exist for this vehicle but none carries this field, and there was too little to estimate from.
EPA fuel economy
1998 Cadillac Eldorado MPG
The EPA rates it at 18 mpg combined, 15 mpg city and 24 mpg highway.
Combined
18 mpg
EPA combined cycle
City
15 mpg
EPA city cycle
Highway
24 mpg
EPA highway cycle
Fuel: Regular
Safety recalls
1998 Cadillac Eldorado recalls
Campaigns NHTSA has filed against this year, make and model, grouped by what the campaign actually asks an owner to do.
We have not completed a recall check for this vehicle yet, so this page cannot tell you whether campaigns exist. That is not the same as there being none.
Check your own VIN on NHTSA.gov
Keep a record of what has been done
Log the work as it happens with dates, mileage, cost and photos, so a remedy you have already had carried out is something you can show rather than something you have to remember.
Never look up your Eldorado's numbers again.
Add yours and these figures stop being a reference and start being your car. It takes a minute.
- Oil life tracked against your real mileage
- Every fill-up, with the cost and MPG behind it
- Registration and insurance dates that stop surprising you
- Service history with photos and receipts
One weekly email, and only when something is actually due.
Common questions
1998 Cadillac Eldorado maintenance questions
What kind of oil does a 1998 Cadillac Eldorado take?
The 1998 Cadillac Eldorado takes SAE 5W-30 engine oil, about 7.5 qt with a filter change.
How often does a 1998 Cadillac Eldorado need an oil change?
Every 7,500 miles or 12 months, whichever comes first.
What size tires does a 1998 Cadillac Eldorado use?
The factory tire size is 225/60R16.
What gas mileage does a 1998 Cadillac Eldorado get?
The EPA rates it at 18 mpg combined, 15 mpg city and 24 mpg highway.
Where these figures come from
- Vehicle details are decoded from VIN data published by NHTSA's vPIC database.
- Fuel economy comes from the EPA's published fuel economy dataset.
- Recall campaigns come from NHTSA. A campaign covers a VIN range within a model year, so a listing here is never a statement about a specific vehicle.
- Service specs are compiled per trim. Anything marked Estimated was derived from the engine rather than read from a published specification, and your owner's manual or door placard outranks it.
Catalog entry last updated 2026-09-01.