Eastman Skydrol LD-4
Skydrol LD-4 was introduced in 1977 , and is well known around the world. At the time of its introduction it was a breakthrough product, solving problems of valve erosion and thermal stability common in earlier fluids. Its excellent thermal stability under real world conditions has given it a reputation as the gold standard among Type IV fluids. Skydrol LD-4 features low density, excellent thermal stability, valve erosion prevention, and deposit control.
Typical Properties
| Property | Test Method | Typical Value, Units |
|---|---|---|
| General | ||
| Acid Number (mg KOH/g) | 0.10 Maximum | |
| Appearance | Clear, oily liquid | |
| Autoignition Temperature | ASTM D 2155 | 400 °C (752 °F) Minimum |
| Color | Purple, essentially equivalent to intensity and hue standard | |
| Elemental Content | ||
| Calcium | 10 ppm, Maximum | |
| Chlorine | 50 ppm, Maximum | |
| Potassium | 30 ppm, Maximum | |
| Sodium | 10 ppm, Maximum | |
| Sulfur | 1185-1540 ppm | |
| Fire Point (COC) | 177 °C (350 °F) Minimum | |
| Flash Point (COC) | 160 °C (320 °F) Minimum | |
| Moisture | 0.20 % Maximum | |
| Particle Contaminationa | ||
| 15-25 micron size | 5,700 Maximum | |
| 25-50 micron size | 1,012 Maximum | |
| 50-100 micron size | 180 Maximum | |
| 5-15 micron size | 32,000 Maximum | |
| Over 100 micron size | 32 Maximum | |
| Pour Point | -62 °C (-80 °F) Maximum | |
| Specific Gravity @ 25°C/25°C | 1.003-1.013 | |
| Viscosity | ||
| @ 38°C (100°F) | 10.65-11.65 cSt | |
| @ -54°C (-65°F) | 2000 cSt Maximum | |
| @ 99°C (210°F) | 3.66-4.00 cSt | |
At AMAC, we take pride in delivering premium branded lubricants to your doorstep safely, promptly, and in their original sealed packaging. Every shipment reflects our commitment to quality, reliability, and customer satisfaction.
Sealed & Secure Packaging
All products are supplied in factory-sealed cans, pails, and drums, ensuring complete protection against contamination or tampering. Whether you order a single pack or a bulk shipment, you receive authentic and brand-new lubricants every time.
Reliable Nationwide Delivery
With a well-established logistics network, we offer nationwide delivery across Pakistan. From industrial sites to retail outlets, our team ensures your lubricants arrive on time and in perfect condition.
Fast Dispatch & Lead Time
Once your order is confirmed, we prepare and dispatch it within 24 to 48 hours. Delivery time may vary depending on your location and order size, but we always aim to provide the fastest and most efficient service possible.
Bulk & Industrial Supply
For our industrial clients, we offer scheduled deliveries and customized logistics solutions. Our fleet and trained staff handle drums and bulk quantities with care, ensuring a smooth and uninterrupted supply for your operations.
Customer Support
Your satisfaction is our priority. Our support team is always ready to assist with delivery updates, order tracking, and special delivery requirements.
We go beyond just supplying lubricants. We deliver trust, consistency, and peace of mind with every order.






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