{"id":187,"date":"2026-07-24T07:03:42","date_gmt":"2026-07-24T07:03:42","guid":{"rendered":"https:\/\/allisonoffhighway.com\/aftermarket\/afm\/?page_id=187"},"modified":"2026-07-27T09:27:35","modified_gmt":"2026-07-27T09:27:35","slug":"allison-fluid","status":"publish","type":"page","link":"https:\/\/allisonoffhighway.com\/aftermarket\/afm\/allison-fluid\/","title":{"rendered":"Oil"},"content":{"rendered":"

[vc_section][vc_row full_width=”stretch_row” css=”.vc_custom_1784879069980{background-image: url(https:\/\/allisonoffhighway.com\/aftermarket\/afm\/wp-content\/uploads\/2026\/07\/Header-1920×800-TES-668-Fluids-1.jpg?id=286) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}”][vc_column]

Allison Off-Highway Drive and Motion Systems<\/h3>

Aftermarket<\/h3>[vc_empty_space]

THE RIGHT FLUID.
\nTHE ALLISON WAY.<\/h1>[vc_empty_space height=”50px”][vc_single_image image=”254″ img_size=”medium” css=”” el_class=”img-to-white”][vc_empty_space height=”35px”][\/vc_column][\/vc_row][vc_row full_width=”stretch_row” css=”.vc_custom_1784630058989{background-color: #004694 !important;}”][vc_column][vc_column_text css=””]<\/p>\n

Keep your machine running at its best.<\/strong><\/span><\/h2>\n

 <\/p>\n

Off-Highway applications work hard every day.
\nSupport performance with Allison approved fluid.<\/span>[\/vc_column_text][vc_empty_space][vc_row_inner][vc_column_inner offset=”vc_hidden-md vc_hidden-sm vc_hidden-xs”]

Check Your Fluid<\/a><\/div>[\/vc_column_inner][\/vc_row_inner][vc_row_inner][vc_column_inner offset=”vc_hidden-lg”]Check Your Fluid<\/a>[\/vc_column_inner][\/vc_row_inner][vc_empty_space][vc_column_text css=””]TES 668\u00ae<\/sup> may be suitable for selected Allison Off-Highway transmissions.<\/span>[\/vc_column_text][vc_empty_space height=”42px”][\/vc_column][\/vc_row][\/vc_section][vc_section][vc_row full_width=”stretch_row” css=”.vc_custom_1784646483043{background-image: url(https:\/\/allisonoffhighway.com\/aftermarket\/afm\/wp-content\/uploads\/2026\/07\/Immagine-2-1920×800-TES-668-Fluids.jpg?id=212) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}”][vc_column width=”1\/3″ offset=”vc_hidden-md vc_hidden-sm vc_hidden-xs”][vc_empty_space]

Fluid choice matters.<\/h2>[vc_empty_space][vc_column_text css=””]The right fluid helps support performance, durability, and uptime.<\/p>\n

In demanding Off-Highway applications, choosing the correct fluid is part of protecting what keeps your machine moving.[\/vc_column_text][vc_empty_space][\/vc_column][vc_column width=”2\/3″ css=”.vc_custom_1785141968879{padding-left: 60px !important;}” offset=”vc_hidden-md vc_hidden-sm vc_hidden-xs”][\/vc_column][\/vc_row][vc_row full_width=”stretch_row” css=”.vc_custom_1785141920836{background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}”][vc_column offset=”vc_hidden-lg”][vc_empty_space]

Fluid choice matters.<\/h2>[vc_empty_space][vc_column_text css=””]The right fluid helps support performance, durability, and uptime.<\/p>\n

In demanding Off-Highway applications, choosing the correct fluid is part of protecting what keeps your machine moving.[\/vc_column_text][vc_empty_space][vc_single_image image=”213″ img_size=”full” css=””][vc_empty_space][\/vc_column][\/vc_row][vc_row full_width=”stretch_row” css=”.vc_custom_1784644909824{background-color: #FAFAFA !important;}”][vc_column]

Designed to help protect what keeps you moving.<\/h2>[vc_empty_space][vc_row_inner equal_height=”yes”][vc_column_inner width=”1\/6″]
Performance Support<\/div>

Performance Support<\/p>

Helps support consistent operation in demanding conditions.<\/p><\/div>[\/vc_column_inner][vc_column_inner width=”1\/6″]

Durability<\/div>

Durability<\/p>

Designed to help protect critical components over time.<\/p><\/div>[\/vc_column_inner][vc_column_inner width=”1\/6″]

Wear Protection<\/div>

Wear Protection<\/p>

Supports anti-wear performance where approved.<\/p><\/div>[\/vc_column_inner][vc_column_inner width=”1\/6″]

Cold Operation<\/div>

Cold Operation<\/p>

Helps support performance in challenging temperatures.<\/p><\/div>[\/vc_column_inner][vc_column_inner width=”1\/6″]

Fluid Stability<\/div>

Fluid Stability<\/p>

Designed to resist degradation and support long-lasting performance.<\/p><\/div>[\/vc_column_inner][vc_column_inner width=”1\/6″]

Uptime<\/div>

Uptime<\/p>

Helps keep your equipment ready for the job.<\/p><\/div>[\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row content_placement=”middle”][vc_column width=”1\/2″][vc_single_image image=”266″ img_size=”full” alignment=”center” css=””][\/vc_column][vc_column width=”1\/2″][vc_column_text css=””]<\/p>\n

How To Know It\u2019s Genuine?<\/span><\/strong><\/u><\/u><\/h3>\n

Allison takes its fluids reputation seriously. Only after an oil meets the Allison standards, we give it our badge of approval and a designated approval number. Allison Approved oils will carry our badge on the bottle, as seen to the right, and with the approval number, for example 668-10002020.<\/span><\/p>\n

[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_empty_space][\/vc_column][\/vc_row][\/vc_section][vc_section][vc_row full_width=”stretch_row” content_placement=”middle” css=”.vc_custom_1784645907420{background: #0b1e42 url(https:\/\/allisonoffhighway.com\/aftermarket\/afm\/wp-content\/uploads\/2026\/07\/Immagine-4-1920×800-TES-668-Fluids.jpg?id=215) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}”][vc_column width=”1\/2″][vc_single_image image=”288″ img_size=”full” alignment=”center” css=””][\/vc_column][vc_column width=”1\/2″]

Start with the right recommendation.<\/h3>[vc_empty_space][vc_column_text css=””]Not every fluid is right for every application. Before selecting or changing fluid, always check the correct recommendation for your specific Allison-equipped machine.<\/span>[\/vc_column_text][vc_empty_space]
Open Fluid Selector<\/a><\/div>[vc_empty_space][vc_column_text css=””]Always verify the right fluid before every service operation.<\/span>[\/vc_column_text][vc_empty_space][\/vc_column][\/vc_row][\/vc_section][vc_section full_width=”stretch_row” css=”.vc_custom_1784705009335{background-color: #FAFAFA !important;}”][vc_row full_width=”stretch_row”][vc_column width=”1\/3″]

Download the TES 668\u00ae<\/sup> brochure<\/h4>[vc_column_text css=””]Learn more about Allison Approved Fluids and TES 668\u00ae<\/sup> benefits.[\/vc_column_text][vc_empty_space]
Download Brochure<\/a><\/div>[vc_empty_space][\/vc_column][vc_column width=”1\/3″]

Watch the TES 668\u00ae<\/sup> video<\/h4>[vc_column_text]Discover how the right fluid helps support performance and protection.[\/vc_column_text][vc_empty_space]
Watch Video<\/a><\/div>[vc_empty_space][\/vc_column][vc_column width=”1\/3″]

Choose Allison approved protection.<\/h4>[vc_column_text css=””]Allison Approved Fluids are tested to meet Allison standards.[\/vc_column_text][vc_empty_space]
Explore Allison Approved Fluids<\/a><\/div>[vc_empty_space][\/vc_column][\/vc_row][vc_row][vc_column][vc_empty_space][\/vc_column][\/vc_row][\/vc_section][vc_row full_width=”stretch_row” content_placement=”middle” css=”.vc_custom_1784645873891{background: #000000 url(https:\/\/allisonoffhighway.com\/aftermarket\/afm\/wp-content\/uploads\/2026\/07\/Immagine-5-1920×800-TES-668-Fluids.jpg?id=216) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}”][vc_column width=”1\/2″ offset=”vc_hidden-md vc_hidden-sm vc_hidden-xs”][vc_empty_space]

Check before you choose.<\/h2>[vc_empty_space][vc_column_text css=””]TES 668\u00ae<\/sup> may be the right choice for selected Off-Highway applications equipped with Allison products. Before every fluid change, confirm the correct recommendation using the Allison Off-Highway Fluid Selector.<\/span>[\/vc_column_text][vc_row_inner][vc_column_inner][vc_empty_space height=”50px”][\/vc_column_inner][\/vc_row_inner][\/vc_column][vc_column width=”1\/2″ offset=”vc_hidden-md vc_hidden-sm vc_hidden-xs”]
Check And Buy<\/a><\/div>[\/vc_column][\/vc_row][vc_row full_width=”stretch_row” content_placement=”middle” css=”.vc_custom_1785144275893{background-color: #000000 !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}”][vc_column offset=”vc_hidden-lg”][vc_empty_space]

Check before you choose.<\/h2>[vc_empty_space][vc_column_text css=””]TES 668\u00ae<\/sup> may be the right choice for selected Off-Highway applications equipped with Allison products. Before every fluid change, confirm the correct recommendation using the Allison Off-Highway Fluid Selector.<\/span>[\/vc_column_text][vc_empty_space height=”25px”]Check And Buy<\/a>[vc_empty_space height=”25px”][\/vc_column][\/vc_row][vc_row full_width=”stretch_row_content_no_spaces” content_placement=”middle” css=”.vc_custom_1785144454304{background-color: #000000 !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}”][vc_column offset=”vc_hidden-lg”][vc_single_image image=”216″ img_size=”full” css=”.vc_custom_1785144447607{margin-top: 0px !important;margin-right: 0px !important;margin-bottom: 0px !important;margin-left: 0px !important;}”][\/vc_column][\/vc_row][vc_row full_width=”stretch_row” css=”.vc_custom_1784630557135{background-color: #004694 !important;}”][vc_column width=”1\/2″]

Need support? Talk to an Allison Off-Highway expert.<\/h3>[vc_empty_space][vc_column_text css=””]Our team is ready to help you find the right solutions for your applications.<\/span>[\/vc_column_text][vc_empty_space][\/vc_column][vc_column width=”1\/2″ el_class=”form-oil”]\n
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