Automotive gear oil aimed at reliable differential lubrication and smoother axle operation. Quiet running and reduced driveline noise appeal to DIY mechanics and professional technicians. Is Comma SX75W-90 Gear Oil the sensible choice for routine differential servicing?
⚡ At a Glance
- • Viscosity Grade: 75W-90 semi-synthetic, GL-5
- • Best for: Differentials
- • Not ideal for: Engine lubrication or uses outside gear systems
Semi-synthetic 75W-90 gear oil with a GL-5 rating, supplied in a 1L format. User feedback highlights effective use in differentials and noticeable reduction in differential noise.
Quieter operation, thanks to GL-5 semi-synthetic formulation
GL-5 specification and the semi-synthetic designation appear in the product name, indicating formulation and performance intent for gear applications. The 75W-90 viscosity grade is specified for standard gear lubrication.
Users report reduced differential noise and smoother running after switching to this oil, making it useful for noisy or ageing axles.
Appropriate for gear protection, with 75W-90 viscosity
75W-90 is the stated viscosity grade in the product name, chosen to match many gear and axle requirements. GL-5 classification signals suitability for gear environments where that rating is required.
Helps maintain proper lubrication across typical operating conditions, supporting reliable differential performance during normal driving.
Good value for maintenance, with a premium semi-synthetic label
Product description lists the item as premium and the name identifies a semi-synthetic formulation, while user reviews describe it as cost effective. Volume provided in the name is 1L, suitable for single services.
Delivers a balance of performance and affordability, according to user feedback, so it suits routine servicing without committing to more expensive fully synthetic options.
✨ The 4 Key Reasons for Comma SX75W-90 Gear Oil
- User-reported noise reduction - Noticeably reduces differential noise for smoother driving
- Semi-synthetic formulation - Balances performance and cost compared with fully synthetic alternatives
- GL-5 specification - Meets the standard expected for many gear applications requiring that rating
- One-litre pack - Convenient size for single differential services or top-ups
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Viscosity Grade: 75W-90
- Specification: GL-5
- Type: Semi-synthetic gear oil
- Volume: 1L
❓ Frequently Asked Questions
Q: Is this oil suitable for vehicle differentials?
A: Yes, user reviews specifically highlight excellent performance in differentials, and the GL-5 rating in the product name identifies it for gear applications.
Q: Is the oil fully synthetic?
A: No, the name states semi-synthetic, so the formulation combines synthetic and mineral components rather than being fully synthetic.
Q: What pack size is supplied?
A: The product name indicates a 1L volume, making it suitable for single differential services or top-ups.
🏆 Our Verdict
Ideal for drivers and mechanics who service differentials and want a semi-synthetic, GL-5 rated gear oil. The combination of 75W-90 viscosity, GL-5 classification and user-reported noise reduction is the key selling point. Users describe good value and practical long-term maintenance benefits, making it a sensible choice for routine upkeep.
