Onyx Auto Spa — Scottsdale & Phoenix
Controlled, professional engine bay cleaning — degrease, steam, and dress without ever spraying water on sensitive electronics.
From $145
A clean engine bay is more than vanity — it makes leaks easier to spot, improves resale presentation, and signals a properly cared-for vehicle. But doing it wrong can short a sensor, ruin a control unit, or leave water trapped where it shouldn't be.
Onyx Auto Spa's engine bay process uses targeted degreasing, low-pressure steam, and concours-grade dressings — applied carefully around every sensor, harness, and intake.
Why It Matters
Targeted application — no high-pressure water near ECUs, alternators, or harnesses.
Degreases baked-on oil, road dust, and residue without harsh acids.
Non-greasy dressings restore plastics and trim to a clean factory look.
A clean bay makes it obvious if you develop an oil seep or coolant weep later.
Every appointment follows the same careful, documented process — no shortcuts.
Sensitive components (alternator, intakes, fuse boxes) bagged or protected.
Citrus or APC-based degreaser applied and agitated where needed.
Controlled rinse — never spraying pressure at electronics.
Vapor steam for tight crevices and intricate engine details.
Non-greasy plastic dressing on hoses, intake, and engine covers.
Yes — when done correctly. We avoid pressure washing electronics and use targeted steam and chemistry instead.
No. Professional engine bay detailing is a cosmetic service and does not affect warranty.
No — we always work on a cool engine. We'll coordinate scheduling so the vehicle isn't driven before the appointment.
Onyx Auto Spa comes to your home or office anywhere across the Phoenix metro. Fully self-contained mobile service, every time.
Pair services for the best results — most clients combine paint correction with ceramic coating.
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