Actually, if you are being "frugal", get the Rotella T4, which is 15w-40 mineral oil. The Rotella T6 is the synthetic and is available in a 5w-40 as well as the 15w-40 that was linked.Heck, if being frugal, spend $20 from Walmart and get a jug of Shell Rotella T6 15w40. It is synthetic, and also JASO MA rated.
https://www.walmart.com/ip/Shell-Ro...iesel-Motor-Oil-SAE-15W-40-1-Gallon/869812640
Cost for the T4 is about $12-13, cost for the T6 is about $20-22.
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