Biffa’s experience demonstrates how, by consulting Allison about the frequency of replacing transmission fluid and filters, other truck fleet operators could also make significant savings.
Transmission service intervals are typically based on fleet operators’ longstanding habits, historic predictive maintenance schedules or standard recommendations from truck OEMs or bodybuilders. When Allison examined the schedules for Biffa’s 1,150 Allison-equipped Dennis Eagle Elite and Mercedes-Benz Econic trucks in the UK, it found that service intervals could safely be extended without diminishing transmission performance, efficiency or durability.
Biffa had previously followed a recommendation to renew the transmission fluid and filters on its Dennis Eagle trucks – which run municipal services such as refuse collection – every 12 months, 600 hours or 15,000 kilometres (9,300 miles), whichever came first. Now, those intervals are extended to 36 months, 3,000 hours or 120,000 kilometres (74,565 miles) with the continued use of Allison TES 295-approved lubricants that are synthetic, engineered and tested to deliver superior performance.
In addition to making significant savings on annual oil and filter costs, the revised service intervals are saving Biffa 3,600 hours in labour and vehicle downtime annually. Oil consumption and disposal has also been reduced by 33,500 litres each year, making a positive contribution to Biffa’s 10-year sustainability strategy.
“Like many fleets, our service intervals are somewhat defined by how we’ve always done it, with the aim of ensuring our vehicles are well maintained and deliver efficient, long service,” said Steve Lea, Biffa Municipal fleet commercial manager. “We have gone from servicing some double-shifted RCVs twice per year to just three times in their 10-year life.”
Nathan Wilson, account and market development manager at Allison Transmission, UK & ROI, adds: “We encourage fleet operators to have a direct dialogue with us about the health, performance and efficiency of their Allison transmissions.”
Allison recommends fleets undertake fluid analysis as the primary method for determining fluid change intervals and has also developed a “Fluid + Filter Calculator” to help fleets determine their fluid change information. The calculator can be accessed via the weblink below.