jackaroo,

I believe you're in the right track. IMO the best available full synth around is Delvac 1; the only drawback is its cost.

Since cost is very much an issue, what I have in mind is to create a concoction of Delvac 1 and another dino oil, preferably JASO DH-1 rated and a 15W-40 multigrade. I am looking at a ratio of 4.3 liters Delvac 1 plus 5 liters dino oil. This should produce a semi-synth that I plan to use only for 5K km or 6 months, whichever, comes earlier. Delvac MX dino oil is a candidate early on, but was dropped on account that it is not JASO DH-1 rated.

Assuming you're with me on this plan, which is the best dino oil currently in the market that should fit the purpose? Your insights on this would be much appreciated.

TIA......