# G-Spec - Car Maintenance Specs — Oil, battery, A/C & tyres

> Oil, battery, A/C & tyres (iPhone/iPad app by Duc Loc Bui.)

- Source: https://appshunter.io/ios/app/g-spec-car-maintenance-specs/id6760633843 (this page in markdown: same URL + `.md`)
- Developer: [Duc Loc Bui](https://appshunter.io/developer/1885432939)
- Category: Utilities, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 47 MB
- Languages: American English, Danish, Dutch, Finnish, French (France), German (Germany), Hindi, Indonesian, Italian, Japanese and 10 more
- Released: 2026-03-30
- Data updated: 2026-09-29
- User reviews in markdown: https://appshunter.io/ios/app/g-spec-car-maintenance-specs/id6760633843/reviews.md

## What is G?

Look up car service specs in seconds.

G-SPEC helps workshops and technicians quickly find the exact specs they need for car servicing, repair and care.

Choose the make, model, year, engine and gearbox to see information that matches the vehicle's configuration. From engine oil and transmission oil to battery, air conditioning, wheels and tyres, and wipers - the specs you need are gathered in one app.

No more flipping through manuals in the middle of a job.

OILS AND FLUIDS

All eight oils and fluids of a full service, each with its standard and capacity:

- Engine oil: SAE viscosity grade, API standard, ACEA standard, OEM approval and oil capacity.
- Transmission fluid: ATF, CVT fluid, dual-clutch or manual gearbox oil, with SAE and API standards, OEM approval and capacity.
- Transfer case fluid: SAE and API standards, OEM approval and capacity for four-wheel-drive vehicles.
- Front and rear differential oil: SAE and API standards, OEM approval and separate capacity for each axle.
- Coolant: standard, coolant technology, colour and capacity.
- Brake fluid: DOT standard.
- Clutch fluid: standard, for vehicles with a hydraulic clutch.
- Power steering fluid: hydraulic, electric or manual steering, with the fluid standard.
- Drain plug torque and related specs.

BATTERY

- Battery size and capacity.
- JIS and DIN standards.
- Cold cranking amps.
- Vehicles with a second battery list both.

CAR AIR CONDITIONING

Key specs of the A/C system:

- Refrigerant type, including R134a and R1234yf.
- Refrigerant charge.
- Compressor oil type: PAG, POE or PVE.
- Compressor oil amount.
- Pressure chart by temperature to support diagnosis.

WHEELS AND TYRES

- Front and rear tyre sizes.
- Recommended tyre pressure.
- Rim size, PCD and offset.
- Centre bore.
- Wheel nut torque and socket size.

WIPERS

- Front and rear wiper blade sizes.
- Mount type.

SERVICE SCHEDULE

Look up the service schedule by mileage, the items to carry out and what each service level includes.

LOOK UP BY VEHICLE CONFIGURATION

Choose:

Make → Model → Year → Engine → Gearbox

G-SPEC narrows results to the vehicle configuration, saving search time and avoiding mix-ups between versions.

BRANDS COVERED

Data covers mainstream and premium makes:

Toyota, Hyundai, KIA, Mazda, Honda, Ford, Mitsubishi, VinFast, Suzuki, Isuzu, Nissan, Chevrolet, Peugeot, Subaru, Volkswagen, Skoda, Volvo, MG, Haval, GWM, Geely, Omoda, Jaecoo, Beijing, GAC, Hongqi, Mercedes-Benz, BMW, Audi, Lexus, Land Rover, Jaguar, Porsche, MINI, Genesis, Infiniti, Acura, Jeep, RAM, Dodge, Chrysler, Cadillac, Renault, Daewoo and more.

FAST LOOKUPS

- Recently looked-up vehicles appear right on the home screen.
- Reopen the vehicles you work on often with one tap.
- Results are organised into Servicing, Air conditioning, Battery, Wheels & tyres and Wipers.
- Data already viewed is cached on the device, so lookups stay fast where workshop signal is weak.

MANY LANGUAGES

G-SPEC comes in many languages: English, Vietnamese, Indonesian, Malay, Hindi, Thai, Korean, Japanese, German, French, Spanish, Italian, Dutch, Polish, Turkish, Portuguese (Brazil and Portugal), Swedish, Norwegian, Danish and Finnish. Switch language inside the app under Account.

BUILT FOR

- Car technicians.
- Repair and service workshops.
- Service advisors.
- Car care centres.
- Tyre and wheel shops.
- Battery and car air conditioning shops.
- Anyone who needs car service specifications.

IMPORTANT

Specs may vary by market, model year, engine, gearbox and vehicle configuration.

G-SPEC data is compiled from manufacturer and partner technical documentation for reference and cross-checking. Always confirm with the manufacturer's official technical documentation before carrying out work.

DATA FEEDBACK

Send feedback or report data issues inside the app at:

Account → Feedback

Or via gspec.vn.

Terms of Use: https://gspec.vn/en/terms/
Privacy Policy: https://gspec.vn/en/privacy-policy/


## Version history (last 5 releases)

### 1.0.6 — 2026-09-23

Performance improvements and new languages.

### 1.0.5 — 2026-09-17

Improved interface and added English language support.

### 1.0.4 — 2026-07-03

Cập nhật thông tin ứng dụng.
Cải thiện hiệu năng và sửa lỗi.

### 1.0.3 — 2026-06-18

Bug fixes and improvements

### 1.0.2 — 2026-06-06

Bug fixes and improvements

## Apps similar to G

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Smart Shunt](https://appshunter.io/ios/app/smart-shunt/id6762276475) | — | Free | Utilities |
| [SteerLog: Car Maintenance Log](https://appshunter.io/ios/app/steerlog-car-maintenance-log/id6792222351) | — | Free | Utilities |
| [Dreamcart Woocommerce](https://appshunter.io/ios/app/dreamcart-woocommerce/id6751768630) | — | Free | Utilities |
| [Partsbond](https://appshunter.io/ios/app/partsbond/id1542314481) | — | Free | Utilities |
| [ALSEYE](https://appshunter.io/ios/app/alseye/id1156724503) | — | Free | Utilities |
| [NoteDri: Quản lý xe thông minh](https://appshunter.io/ios/app/notedri-quan-ly-xe-thong-minh/id6801801310) | — | Free | Utilities |

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-29.*