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I'm using Chevron Delo 400 15W40 LE in my ISC. According to Chevron this oil is fine in older engines like ours.
I've used Delo 400 15W40 in my ISC, but it wasn't the new LE formulation up until that last couple changes since I can't find anything but the LE now.
I've seen some discussion about the LE oil not being sufficient for sliding tappet engines but no test reports saying otherwise.
Anybody have some hard data and not just opinions?
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2002 Newmar Dutch Star 4090 ISC 350/1050 with Banks Kit, now 435/1200
Charter Good Sam Lifetime Member, FMCA f47302s
RV'ing since 1957, NRA Benefactor Life Member
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