Exterior Add-On, Flat Rate

⚠ Years of Buildup

Your Engine Bay
Tells the Story
of Neglect or Care

Grease, oil mist, road grime, and coastal salt accumulate under the hood year after year. A clean engine bay is not only about looks. It makes a new leak obvious the day it starts, and it is one of the first places a buyer opens.

Pre-wash vehicle preparation before engine bay detailing, SF City Wash mobile detailing
The Problem

What Accumulates Under the Hood

Most drivers open the hood only when something is wrong. By then, years of buildup have already settled across every surface in the engine bay.

01

Oil & Grease Buildup

Minor oil seeps, valve cover mist, and transmission fluid accumulate on engine surfaces over time. Mixed with road dust, this becomes a thick, heat-trapping layer across engine components.

02

Road Grime & Salt

Dirt and salt enter the engine bay through the front grille and wheel wells. In coastal San Francisco, salt air accelerates corrosion on exposed bolts, brackets, and wiring.

03

Hidden Leaks

Oil, coolant, and brake fluid leaks are nearly invisible under a grimy engine bay. Once it is clean, a fresh spot shows up the day it appears instead of six months later.

Why It Matters

More Than Just Appearance

Engine bay detailing is one of the few services that serves both presentation and mechanical awareness simultaneously.

Temperature & Heat Dissipation

Grease and grime act as insulation. A clean engine runs cooler because heat can radiate properly from clean metal surfaces rather than being trapped under buildup.

Early Leak Detection

Any new oil or fluid spot is immediately visible on a clean engine bay. This catches leaks at the earliest stage, often before they become a serious mechanical or environmental issue.

Resale Presentation

A buyer or mechanic who opens the hood and sees a clean engine forms an immediate positive impression of how the vehicle was maintained. A dirty engine bay suggests neglect throughout.

Our Process

How We Detail an Engine Bay Safely

Engine bay detailing requires protecting sensitive components first, then methodically degreasing, rinsing, and finishing. We never use high-pressure water directly on electrical components.

STEP 01

Protect Electrics

We cover the battery, fuse box, alternator, and any exposed wiring connectors before any liquid contact. Cold engine only. We do not detail a hot engine.

STEP 02

Degrease

We apply an engine-safe degreaser to all surfaces and let it dwell. Stubborn grease buildup on specific areas gets a targeted application and agitation with a detailing brush.

STEP 03

Low-Pressure Rinse

We rinse with controlled low-pressure water, not a power washer blast. Water is directed away from protected electrical components and drains naturally out of the bay.

STEP 04

Dry & Dress

We blow-dry the engine bay, then apply a light dressing to all plastic covers and trim. Metal surfaces get a light protective coat. The result is a clean, factory-fresh appearance.

What’s Included

Engine Bay Detailing Add-On

Added to any exterior or full detail service. Flat rate regardless of vehicle size or engine type.

  • Electrical component protection before cleaning
  • Engine-safe degreaser application
  • Detailing brush agitation on stubborn buildup
  • Controlled low-pressure rinse
  • Blow-dry and dressing of all plastics & covers
Note: We require the engine to be cold before starting. If you’ve driven recently, let it cool for at least an hour. We will wait or reschedule the engine bay portion if needed.
ServicePrice
All Vehicle Types, Flat Rate$75

Add-on to Exterior Services or Full Package. Not available as standalone-only.

Pre-sale prep: Engine bay detailing is one of the highest-ROI add-ons when preparing a vehicle for private sale or trade-in.

Open the Hood With Confidence

Add engine bay detailing to your next service. We come to you anywhere in San Francisco.

FAQ

Common Questions

Yes, when done correctly. Modern engines are designed to handle moisture. We protect sensitive electrical components before any water or chemical contact, work with the engine cold, and use controlled low-pressure rinsing rather than a direct blast. A properly detailed engine bay is safe and dry.
A clean engine runs at more consistent temperatures because accumulated grease acts as an insulator. More practically, a clean engine bay makes it far easier to spot fluid leaks, cracked hoses, and failing components before they become expensive problems.
Once per year is typical for daily-driven vehicles. Cars in coastal cities like San Francisco accumulate salt air, moisture, and grime faster than inland vehicles. If you’re preparing a vehicle for sale or a show, engine bay detailing significantly improves perceived condition.
Yes. After cleaning and drying, we apply a light dressing to plastic covers and trim in the engine bay to restore color and provide mild protection against drying and cracking.