Jeep Wrangler JK/JL 3.6 Oil Change
Buyer guide · Updated September 28, 2026
The 3.6L Pentastar in JK (2012–2018) and JL Wranglers is straightforward to service if you use the right viscosity, fill volume, and a filter that actually fits. This page covers the usual specs and a couple of Amazon parts that owners commonly buy—nothing fancy, just what works.
Oil grade and capacity
- Viscosity: Most JK/JL 3.6 manuals call for SAE 5W-20 (API SN/SP or later). Confirm on your oil-fill cap and owner’s manual—cold-climate or dealer-updated guidance can vary.
- Capacity (typical): About 6 quarts with filter on many 3.6 JK/JL setups. Always refill gradually, run the engine, recheck the dipstick, and top off. Do not assume “full” from the bottle count alone.
- Interval: Follow your manual (often ~5,000–10,000 miles depending on oil type and duty). Short trips, deep water, dust, and towing lean toward the shorter end.
Filter: Mopar 68191349AC
The OEM-style cartridge/canister reference many shops use for the 3.6 is Mopar 68191349AC (or current supersession). Aftermarket filters that list this number as a cross are fine if the seal and bypass match—cheap no-name filters are where DIY oil changes usually go wrong.
Parts worth ordering
- Mopar oil filter (68191349AC / listed fitment) — stick with OEM or a known equivalent that lists JK/JL 3.6 fitment.
- 5W-20 full synthetic (multi-quart) — check the listing viscosity and API rating before you click buy; Amazon titles rotate.
Quick DIY checklist
- Warm the engine slightly so oil drains cleaner; park level.
- Drain plug first, then filter. Replace the crush washer if your plug uses one.
- Hand-tighten the new filter (plus any torque your manual specifies for the housing if cartridge style).
- Refill ~5.5 qt, start, check for leaks, then fine-tune to the dipstick hash marks.
- Reset the oil-life monitor if your Jeep has one.
Ask TekJeep AI
Not sure about your year, drain-plug torque, or whether you’re on a cartridge housing vs spin-on? Open TekJeep AI chat on the homepage, pick your year/model, and ask before you wrench.
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Mechanic disclaimer: This is general enthusiast information, not a substitute for a licensed mechanic or your service manual. Torque specs, capacities, and procedures can change by year and option package. Verify before you work on the vehicle. You are responsible for how you use this information.