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Gear Oil

Jeffery Filiault uses 15/40 High TBN Truck Oil in 92 Kenworth T600 Cat Diesel

Since my first oil change on my 92 Kenworth after buying it used with 200,000 miles on it .The previous owner only used LUCAS OIL. It now has 650,000 miles and still no oil useage. I would not use anything but LUCAS. My racing miata now uses only 20 / 50 synthetic MOTOR OIL . The oil survived 2 hours of practice and a 4 hour induro and when drained still looked like new . This year I will put it to the ultimate test a 25 hour enduro at THUNDER HILL RACEWAY .This will be a brutal test wich I would not attemt with out LUCAS Oil Thanks....

Jeffery Filiault

Santa Cruz, CA

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