ISOSYN Advanced Technology™

ISOSYN Advanced Technology ISOSYN Advanced Technology
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Your power to go further

Power is Confidence

The next generation of
diesel engine oil chemistry

From 100 years of Chevron formulating expertise came Delo® 400 with ISOSYN Advanced Technology. Engineered to deliver outstanding wear protection with long service intervals.

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Ozark Motors + Delo® 400

“When I got here in 2003, we were changing oil at 25,000 miles…. Today, with the next generation 5W-30 full synthetic, we’ve got the fleet at 75,000 miles and planning to stretch that to 100,000.” 

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Boaty's Transport + Delo® 400

Boaty’s reported a 2% improvement in fuel efficiency relative to an SAE 15W-40 oil in their field trial evaluation of Delo® 400 ZFA SAE 10W-30