Hey, Jmac check out specs on Penrite HPR15 it is 15W60 it is one very tough oil, it resists burning at high temp. and it has very high HTHS no.
I use Penrite oils for 6 months now I moved from ELF (not completely tough). You will like the cost of Enviro oil.
Anyone needs to reduce oil consumption in older engine try Penrite HPR15
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