• 928M0078630 Mercury MerCruiser 4 Stroke Marine engine oil 25W40 | Genuine Quicksilver OEM Part
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928M0078630 Mercury MerCruiser 4 Stroke Marine engine oil 25W40 | Genuine Quicksilver OEM Part

928M0078630 Mercury MerCruiser 4 Stroke Marine engine oil 25W40 | Genuine Quicksilver OEM Part

$88.40 AUD
$88.40 AUD
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🔧 Product Description

Genuine Mercury 25W-40 FourStroke Marine Engine Oil - Part Number: 92-8M0078630

Genuine Mercury / Quicksilver 25W-40 FourStroke marine engine oil formulated for Mercury, Mariner and MerCruiser four-stroke petrol engines. This marine-grade oil is designed for high-load marine operation, corrosion resistance and sustained RPM use in outboards, sterndrives and inboards where 25W-40 is specified.

⚙️ Key Features

  • Genuine Mercury / Quicksilver marine engine oil
  • Correct Mercury part number 92-8M0078630
  • Listing reference: 928M0078630
  • SAE 25W-40 FourStroke marine oil
  • Formulated for four-stroke marine engines
  • Suitable for Mercury FourStroke outboards and MerCruiser petrol engines where specified
  • Designed for marine corrosion and high-load protection

🚤 Compatibility

Commonly used on

  • Mercury FourStroke outboards
  • Mariner FourStroke outboards
  • MerCruiser petrol sterndrive engines
  • MerCruiser petrol inboard engines
  • Annual and 100-hour oil service

Typically suits

  • Engine models:
  • Mercury 25HP to 150HP FourStroke outboards where 25W-40 is specified
  • Mercury 175HP to 300HP FourStroke outboards where specified
  • Mercury Verado applications where the service chart lists 25W-40
  • Mercury SeaPro FourStroke applications where specified
  • Mercury Pro XS FourStroke applications where specified
  • MerCruiser 3.0L, 4.3L, 5.0L, 5.7L, 350 MAG, 6.2L, 8.1L and 8.2L petrol engines where 25W-40 marine oil is specified
  • MerCruiser MPI, carburetted and EC petrol engine service charts calling for 25W-40
  • Engine Type: Mercury / Mariner FourStroke outboard and MerCruiser petrol engine
  • System Type: Engine lubrication oil
  • Oil Grade: SAE 25W-40 marine engine oil

🔌 Function

The oil lubricates internal engine components, helps manage heat, reduces wear and supports corrosion protection in marine environments.

Common service use

  • Scheduled engine oil changes
  • Seasonal service
  • 100-hour maintenance
  • Oil top-up with matching grade
  • Service after oil contamination
  • Use where the engine service chart specifies 25W-40

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 92-8M0078630 current Mercury 25W-40 FourStroke marine oil reference
  • 8M0078630 short-form container reference

OEM / Related Numbers

  • 92-8M0078630
  • 8M0078630
  • 928M0078630
  • Mercury 25W-40 FourStroke oil
  • Quicksilver 25W-40 marine oil
  • FourStroke marine engine oil
  • FC-W 25W-40 marine oil
  • 92-8M0078014 related 25W-50 high-performance oil
  • 92-8M0142151 related 10W-30 FourStroke oil

Aftermarket / Verified Equivalents

  • FC-W certified 25W-40 marine four-stroke oil equivalents where permitted by the engine service chart
  • Marine synthetic-blend 25W-40 equivalents may be used only when they meet the required specification
  • Use Mercury / Quicksilver 25W-40 where Mercury specifies it for warranty and service protection
  • Do not substitute automotive oil for marine FC-W service applications

📦 Condition

  • Genuine Mercury / Quicksilver oil
  • Brand new
  • Supplied sealed in original container

Shipping & Delivery

Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.

Returns & Warranty

14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.

Not sure this fits?

Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.

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