Paccar MX 13 - Avg fuel economy running bulk freight - Bulk Trucking Forum & Discussion Board & Bulkloads.com

{ "forumId": 68973, "postTypeId": 1, "postType": "Forum", "forumTitle": "Paccar MX 13 - Avg fuel economy running bulk freight", "forumContent": "Looking at buying a T680 with a Paccar MX13 450hp engine, 2.79 gear ratio , 12 speed automatic transmission. 230 wheel base, 76 inch sleeper Pulling 80 000lbs mostly interstate, want to know what is the average fuel economy people are seeing with similar setups.", "forumContentHtml": "Looking at buying a T680 with a Paccar MX13 450hp engine, 2.79 gear ratio , 12 speed automatic transmission. 230 wheel base, 76 inch sleeper Pulling 80 000lbs mostly interstate, want to know what is the average fuel economy people are seeing with similar setups.", "thumbUrl": "", "dateAdded": "2026-05-12T22:25:02Z", "lastPost": "2026-05-13T13:13:30Z", "views": 61, "likes": 0, "dislikes": 0, "messageCount": 2, "premiumOnly": 0, "isfeatured": 0, "showInDays": -100, "showDate": "", "forumLink": "", "youtubeVideoId": "", "approved": 1, "active": 1, "alias": "paccar-mx-13--avg-fuel-economy-running-bulk-freight", "forumUrl": "https://www.bulkloads.com/forum/paccar-mx-13--avg-fuel-economy-running-bulk-freight/", "userId": 212532, "firstName": "Michael", "lastName": "Henwick", "companyName": "GOLDEN GRAIN FREIGHT LLC", "email": "[email protected]", "city": "Woodrow", "state": "CO", "userCommentCount": 2, "userLikes": 0, "replies": [ { "replyId": 70226, "content": "I have the same engine but with a manual and a different gear ratio. I can hit 6 and 1/2 on a good day, but the wind seems to massively impact that. It's also insanely weak at climbing hills.", "contentHtml": "I have the same engine but with a manual and a different gear ratio. I can hit 6 and 1/2 on a good day, but the wind seems to massively impact that. It's also insanely weak at climbing hills.", "parentReplyId": null, "thumbUrl": "", "avatarThumbUrl": "https://s3.amazonaws.com/cdn.bulkloads.com/user_files/profile/thumbs/default.png", "signUpDate": "2025-06-13", "dateAdded": "2026-05-13T13:19:42Z", "likes": 0, "dislikes": 0, "approved": 1, "userId": 212106, "firstName": "Justin", "lastName": "Sandberg", "companyName": "FIVE STAR TRANSPORT", "email": "[email protected]", "city": "", "state": "", "userCommentCount": 1, "userLikes": 1, "userDislikes": 0, "links": [], "files": [], "iLike": 0, "iDislike": 0 } ], "userDislikes": 0, "signUpDate": "2025-06-21", "avatarThumbUrl": "https://s3.amazonaws.com/cdn.bulkloads.com/user_files/profile/thumbs/default.png", "links": [], "files": [], "iLike": 0, "iDislike": 0, "iSubscribe": 0 }

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Paccar MX 13 - Avg fuel economy running bulk freight

Posted on Tue, May 12, 2026 at 10:25 PM CST in Woodrow, CO