Delo® Testimonial: Five Star Bus Company, Inc. Achieves 1.6 million kilometers between engine overhauls using Delo® 400 Multigrade SAE 15W-40

In the Philippines, bus companies are relied on by thousands of people each day as one of the main modes of transportation between cities.
Five Star Bus Company, Inc. is one of the country’s leading transportation providers. Known simply as Five Star, the company’s fleet of 400 buses traverses routes from Metro Manila to the Northern Luzon region navigating the country’s chaotic traffic and uneven roads.
For more than 20 years, the company has built a reputation for getting families, tourists, workers and other passengers where they need to go. They’ve learned a few lessons along the way – like what brand of lubricant can be relied on to keep their vehicles on the road in top shape despite the harsh driving conditions.

Engineer Tomas Perez, the maintenance manager for Five Star’s entire fleet, has worked for the company since 1989. He said that over the years, the company has tried lubricants from several different makers.

“We’ve been using different brands of engine oils, and I noticed that at around 350,000 kilometers (217,500 miles), we did overhauls for our engines,” Perez said. “Now we’re using Delo® 400 with ISOSYN® Technology and we’re able to extend our engine life to 1,600,000 kilometers.”

Recently, the company tore down one of several Nissan UD PE6-T diesel engines running past 1.6 million kilometers (approximately 1 million miles), of service using Delo 400 Multigrade SAE 15W-40 engine oil. The condition of the engine made it clear that switching to Delo was the right choice. Starting with the pistons, Perez examined each part of the engine and found it clear of sludge and carbon deposits, despite its many years of service. Each ring on the engine’s pistons stayed free with their lands remaining clean, showing the excellent piston deposit control that Delo® 400 Multigrade SAE 15W-40 lubricant provides.

Likewise, the valve train area stayed clean with no sludge. This same condition could be seen in other parts of the engine as well.

Piston
Good condition with minimal deposits at the top land – the lower ring lands show very little deposit formation allowing for excellent ring sealing.

.Piston Under Crown

Very little deposit formation on the piston under-crown which indicates excellent detergent performance of Delo 400 Multigrade, even under very demanding operating conditions

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Cam Shaft
Excellent condition with no skidding or abrasive wear on the lobes – this cam shaft can be reused again in the bus engine based on its pristine condition.

“The oil sump – [shows] no sludge deposit yet, and it’s been a very long time,” Perez said of the 1.6 million kilometer engine. “The main bearing cap is still intact with minimal deposits, and our oil pump gears – still [show] no sludge.”

Delo 400 Multigrade SAE 15W-40 with ISOSYN® Technology, which combines premium base oils with high performance additives and Chevron’s formulation expertise, delivers more for its customers by providing extended service protection, maximizing engine durability and minimizing operating costs.

Chevron’s Delo products with ISOSYN Technology are made to keep equipment on the road with superb diesel engine parts protection that reduces the need for costly repairs and overhauls and protects resale value.

Migo Hernandez, Five Star’s Vice President for Operations, said, “Delo lubricants create bottom-line value for the company, by keeping its buses on the road longer to serve customers.”

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“Delo 400 with ISOSYN Technology prolongs the life of my engines,” Hernandez said.

“My buses stay longer on the road, and that’s why they run 1.6 million kilometers without overhaul.”
Learn how Delo’s family of products can help you go further, visitwww.ChevronDelo.com