How much is an oil change at Jack's?

Oil changes start at $29.99 for conventional. Synthetic and diesel oils cost more depending on how much your engine holds. Every oil change includes a top-to-bottom inspection so we catch small stuff before it strands you.

How often should I service my car?

Modern engines: oil every 5,000-7,500 miles on synthetic, tire rotation every oil change, brake inspection twice a year. Follow your owner's manual for major services — or bring it in and we'll pull up your make and give you a real schedule.

Do you honor manufacturer warranties?

Yes. Federal law (Magnuson-Moss Act) lets you have any qualified shop do scheduled maintenance without voiding the warranty. We use factory-spec parts and fluids and give you a stamped receipt for your records.

Can you handle tires too?

We sell tires, mount and balance, rotate, and repair — all under one roof so you're not driving all over Davenport for one service. Give us your size and we'll price a set.

Home / Services / Maintenance

Auto maintenance & oil changes in Davenport, IA

Oil changes, brakes, belts, tires, and everything on the manufacturer's schedule — done on time so small problems stay small.

CALL 563-323-5554 WHEN TO COME IN

Free estimates

Diagnostic first, quote before we start

TechNet certified

Nationally certified mechanics

Straight talk

Plain-English answers, no upsell

When to come in

The stuff that saves you money

Most big repairs start as small services that got skipped. If any of these are overdue, come see us.

Oil change interval

Follow the sticker or the manufacturer's schedule — synthetic typically 5,000–7,500 miles, conventional sooner.

Brake pads getting thin

Squealing when you stop is the wear indicator. Address it before you're scoring rotors.

Tire rotation

Every oil change is a good rule of thumb. Even wear means more miles per set.

Fluid checks

Coolant, brake, power steering, transmission — clean fluids protect what they touch.

Belts & hoses

Cracks, fraying, or a squeal on cold start mean a belt is due. Cheap now, roadside later.

Battery test

Batteries last 3–5 years in Iowa summers. A load test tells you if you're on borrowed time.

How we work

Diagnosis before dollars

Inspect the vehicle

We look, listen, and (where it applies) road test and scan.

Honest diagnosis

We identify the real cause, not just the symptom.

Written estimate

A firm price you approve before any work starts.

Fix & back it

Repair done in-house and stood behind by our warranty.

Full capability

Bumper-to-bumper preventive care

We follow your manufacturer's maintenance schedule so nothing gets skipped and your warranty stays intact. Same shop for oil changes as for major work.

Oil & filter changes

Brake service & repair

Tire sales

Rotation & balancing

Suspension & steering

Shocks & struts

Cooling & heating

A/C service & repair

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Oil drain during a preventive maintenance service in Davenport, IA at Jack's Brake & Alignment

60+

Years on schedules

Straight answers

Common questions

Have a different one? Call — a real mechanic answers during shop hours.

How often should I change the oil?

Every 5,000 miles for conventional oil, every 7,500-10,000 for synthetic. Ignore the 3,000-mile rule — that's a holdover from the 1970s. Follow whatever your owner's manual says, or call us with your vehicle and we'll tell you.

Should I use synthetic oil?

For most cars built after 2000, yes — it lasts longer, protects better in Iowa summers, and pays for itself in extended intervals. Older engines with rubber seals sometimes leak more on synthetic, so we'll check first.

Do I have to service at the dealer to keep my warranty?

No. Federal law (Magnuson-Moss Act) protects your right to have any qualified shop do the maintenance. Save your receipts and we use the right parts and fluids for your vehicle.

How often should tires be rotated?

Every oil change — roughly 5,000-7,500 miles. Even wear across all four tires means longer tire life and better handling. It's free at most shops if you're already there for other work.

Overdue for a service?

Skipping the small stuff is how the big stuff starts. Call and we'll get you back on schedule.

CALL 563-323-5554