I have a 97 Bus with a Series 60 470 HP it has around 160K miles We have had it for 8 years.I do all of my own maintenance and repair. My dad had a old bus also it had the 8v 2 stroke engine. Dad always used Delo 400 15w 40w SDE , So I've always used the same, A couple of years ago the SDE was ended and it became a blend Delo 400 15w 40w XLE syn blend, A couple of years I changed over to the XLE. We have not been using the bus much this last year because of Me! I had a heart bypass, So now…
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