# GOS-320-640 Synthetic EP Gear Oil ISO 320, 5 Gal

Date: 2026-11-04

Canonical HTML URL: https://lubriloy.com/blog/gos-320-640-synthetic-ep-gear-oil-iso-320-5-gal

Gear oils · 2026-11-04

[Buy direct from Lubri-Loy - free shipping: GOS-320-640](https://lubriloy.com/products/gos-320-640)

Lubri-Loy GOS-320-640 is Industrial EP Synthetic Gear Oil in ISO viscosity grade 320, supplied in a 5 gal size. It is a factory-order item. Buy direct from Lubri-Loy, with quality lubricants blended in the USA since 1949.

[View Synthetic EP Gear Oil ISO 320, 5 gal / GOS-320-640](https://lubriloy.com/products/gos-320-640)

## 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](https://lubriloy.com/products/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.

Based only on the supplied GOS-320-640 facts: Industrial EP Synthetic Gear Oil, ISO viscosity grade 320, 5 gal size, factory order, listing item 03299487, and Lubri-Loy quality lubricants blended in the USA since 1949.

[Matching product page](https://lubriloy.com/products/gos-320-640) · [All product guides](https://lubriloy.com/blog/product-guides)

[Buy direct from Lubri-Loy - free shipping: GOS-320-640](https://lubriloy.com/products/gos-320-640)

Other ways to buy: [Also available on Motion](https://www.motion.com/products/sku/03299487)