⚡Spark Plug Type
Oldsmobile Custom Cruiser Spark Plug Type
Find the correct spark plug type, gap size, and replacement interval for your Oldsmobile Custom Cruiser. Covers all model years with torque specs.
Quick Answer
The Oldsmobile Custom Cruiser typically uses iridium or platinum spark plugs. Newer models (2010+) use long-life iridium plugs rated for 60,000-100,000 miles. Check below for your specific year.
1987-1992
1987-1992Spark Plug TypeCopper or Platinum
Plug Gap0.028" - 0.044" (0.7 - 1.1mm)
Replacement Interval30,000 miles
Torque Spec13 - 18 ft-lbs
Quantity4-8 (varies by engine)
Notes
- →Use a torque wrench — over-tightened plugs can strip aluminum heads
- →Apply a thin coat of anti-seize to threads (unless plug is pre-coated)
1985-1986
1985-1986Spark Plug TypeCopper or Platinum
Plug Gap0.028" - 0.044" (0.7 - 1.1mm)
Replacement Interval30,000 miles
Torque Spec13 - 18 ft-lbs
Quantity4-8 (varies by engine)
Notes
- →Use a torque wrench — over-tightened plugs can strip aluminum heads
- →Apply a thin coat of anti-seize to threads (unless plug is pre-coated)
Frequently Asked Questions
- What spark plugs does a Oldsmobile Custom Cruiser use?
- The Oldsmobile Custom Cruiser spark plug type varies by year and engine. Newer models (2010+) typically use iridium plugs for longer service life. Older models may use platinum or copper. Check the specs below for your exact year.
- How often should I change spark plugs on a Oldsmobile Custom Cruiser?
- Modern Oldsmobile Custom Cruiser models with iridium plugs can go 60,000-100,000 miles between changes. Older models with copper plugs need replacement every 30,000 miles. Replace sooner if you notice misfires, rough idle, or poor fuel economy.
- What is the spark plug gap for a Oldsmobile Custom Cruiser?
- Most Oldsmobile Custom Cruiser models use a spark plug gap between 0.039" and 0.044" (1.0-1.1mm). Pre-gapped plugs from the OEM are recommended. Do not re-gap iridium-tip plugs as it can damage the electrode.
- Can I upgrade to iridium spark plugs in my Oldsmobile Custom Cruiser?
- Yes, upgrading from copper or platinum to iridium is generally safe and beneficial. Iridium plugs offer better ignitability, longer life, and improved fuel economy. Just match the correct heat range and gap for your engine.
Oldsmobile Custom Cruiser Repair Guides
More Oldsmobile Custom Cruiser Guides
Browse all Spark Plug Type pages →🔋Oldsmobile Custom Cruiser Battery Location❄️Oldsmobile Custom Cruiser Coolant Type🧪Oldsmobile Custom Cruiser Fluid Capacities💡Oldsmobile Custom Cruiser Headlight Bulb Size🛢️Oldsmobile Custom Cruiser Oil Type & Capacity⚙️Oldsmobile Custom Cruiser Serpentine Belt⚡Toyota 4Runner Spark Plug Type⚡Toyota Avalon Spark Plug Type⚡Toyota Camry Spark Plug Type⚡Toyota Celica Spark Plug Type⚡Toyota Corolla Spark Plug Type⚡Toyota Echo Spark Plug Type⚡Toyota Highlander Spark Plug Type⚡Toyota Land Cruiser Spark Plug Type⚡Toyota Matrix Spark Plug Type