ENGINES / OWNER GUIDE
2015 F-150 3.5 EcoBoost Engine Guide
A twin-turbo option with different components from the base 3.5L.
Watch for unusual boost behaviour, rough running, coolant changes and warning lights. Save the full code report rather than replacing a turbo based on one code.
What to know
A truck used extensively for towing deserves careful evaluation of its maintenance history and cooling and drivetrain condition.
What I'd check next
Always verify exact engine and towing configuration in Ford documentation.
2015 Ford F-150 3.5L EcoBoost V6 maintenance reference
These are published Ford figures for this engine, not a universal service fill chart. Check the owner's manual, VIN-specific fitment and current Ford-approved parts before working on the truck.
| Item | Original Ford specification |
|---|---|
| Engine oil grade | SAE 5W-30 |
| Published engine oil capacity | 6.0 US qt / 5.7 L |
| Original oil filter reference | Motorcraft FL-500-S |
| Original spark plug reference | Motorcraft SP-534 |
| Published full cooling-system capacity | 15.6 US qt / 14.75 L |
Capacities above are published specifications. Actual refill amounts can vary; never add the entire coolant-system capacity during a simple top-up. Parts may have superseded numbers.
Continue with the matching service guide
Source: Ford 2015 F-150 owner manual (fourth printing). The 2015 F-150 uses a 6R80 six-speed automatic, but transmission and driveline procedures require the proper service method.
Official information
Start with the Ford owner manual and Ford's 2015 technical specifications. For recall-related questions, use Ford's VIN recall checker. Published specifications may differ by configuration, market and equipment.
I own a Blue Flame Metallic 2015 Ford F-150 XLT and plan to add firsthand observations, photos and maintenance notes to these guides. I won't present an untested repair as something I've personally done.