# AEO-40 Monograde Diesel Engine Oil 40W, 55 Gal

Date: 2026-11-04

Canonical HTML URL: https://lubriloy.com/blog/aeo-40-monograde-diesel-engine-oil-40w-55-gal

Engine oils · 2026-11-04

[Buy direct from Lubri-Loy - free shipping: AEO-40](https://lubriloy.com/products/aeo-40)

Lubri-Loy AEO-40 is SAE 40 monograde diesel engine oil in a 55 gal drum. This factory-order item is made to order, so lead time may apply. Buy direct from Lubri-Loy, with quality lubricants blended in the USA since 1949.

[View AEO-40 Monograde Diesel Engine Oil SAE 40, 55 gal drum / AEO-40](https://lubriloy.com/products/aeo-40)

## Product specification summary

- **Catalog No. / MFR #:** AEO-40

- **Product:** Monograde Engine Oil - Diesel 40W

- **Viscosity grade:** SAE 40 monograde

- **Size:** 55 gal drum

- **Catalog product line:** Monograde Engine Oils - Diesel

- **Availability:** Factory order (made to order)

## AEO-40: SAE 40 monograde diesel engine oil

Catalog number AEO-40 identifies Lubri-Loy Monograde Engine Oil - Diesel 40W, supplied in a 55 gal drum. It belongs to the Monograde Engine Oils - Diesel catalog product line.

Keep the complete catalog number AEO-40, SAE 40 grade and 55 gal drum size together when discussing an order or requesting a quote.

## Lubri-Loy quality, blended in the USA since 1949

Lubri-Loy has blended quality lubricants in the USA since 1949. AEO-40 is part of its monograde diesel engine oil offering.

Buying directly from Lubri-Loy gives you a direct point of contact for questions about this SAE 40 oil and its 55 gal drum size.

## Order AEO-40 directly from Lubri-Loy

Visit the AEO-40 product page on lubriloy.com to order directly or request a quote. The prominent links near the top and end of this article lead to that exact product page.

AEO-40 is a factory-order item, made to order. Lead time may apply, so contact Lubri-Loy to discuss timing before ordering.

[View AEO-40 Monograde Diesel Engine Oil SAE 40, 55 gal drum / AEO-40](https://lubriloy.com/products/aeo-40)

## Frequently asked questions

### What is AEO-40?

AEO-40 is Lubri-Loy SAE 40 monograde diesel engine oil, also described as Diesel 40W.

### What size is covered here?

This article covers the 55 gal drum identified by catalog number AEO-40.

### 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 AEO-40 identity, SAE 40 monograde diesel engine oil description, 55 gal drum size, Monograde Engine Oils - Diesel product line, factory-order status, and Lubri-Loy's USA blending history since 1949.

[Matching product page](https://lubriloy.com/products/aeo-40) · [All product guides](https://lubriloy.com/blog/product-guides)

[Buy direct from Lubri-Loy - free shipping: AEO-40](https://lubriloy.com/products/aeo-40)

Other ways to buy: [Also available on Motion](https://www.motion.com/products/sku/03690030)