I've been told that mineral/semi-synthetic is better than full synthetic for a 94 1kz. With EGR deleted would JASO DH-1 be better than JASO DH-2, as with the EGR removed there isn't any other exhaust treatment device? Also, I'm having a tough time finding JASO certified mineral oil in Canada, BC. What's a good JASO certified 15W40 or 10W40 mineral oil to order?
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