Product specification summary
- Catalog No. / MFR #
- GOS-320-640
- Product
- Industrial EP Synthetic Gear Oil
- Viscosity grade
- ISO 320
- Size
- 5 gal
- Availability
- Factory order

Identify GOS-320-640 synthetic EP gear oil
Catalog number GOS-320-640 identifies Lubri-Loy Industrial EP Synthetic Gear Oil, ISO viscosity grade 320, in a 5 gal size.
Keep the full catalog number, viscosity grade and size together when discussing your order. The product page linked here is for GOS-320-640.
Lubri-Loy quality, blended in the USA since 1949
Lubri-Loy has blended quality lubricants in the USA since 1949. GOS-320-640 is part of its Industrial EP Synthetic Gear Oil family.
Ordering directly connects you with Lubri-Loy for questions about this exact product.
Buy GOS-320-640 directly from Lubri-Loy
Use the GOS-320-640 product page on lubriloy.com to review current direct-purchase options for this 5 gal synthetic EP gear oil.
This is a factory-order item. Contact Lubri-Loy about ordering and availability. The buy-direct links near the top and end of this article take you to the matching product page.
View Synthetic EP Gear Oil ISO 320, 5 gal / GOS-320-640
Frequently asked questions
What is GOS-320-640?
It is Lubri-Loy Industrial EP Synthetic Gear Oil, ISO viscosity grade 320, in a 5 gal size.
Is GOS-320-640 a factory-order item?
Yes. Contact Lubri-Loy about ordering and availability for catalog number GOS-320-640.
How can I buy this product from Lubri-Loy?
Open the matching Lubri-Loy product page. Use Add to cart or Buy now when available, or Request a quote for quote-only products. Direct orders include free shipping within the US.