I have a Toyota 2GR-FS (port injection) that is spec at 0w-20 and plan to buy either 0W-30 premium plus or Euro. The Toyota is not garage kept and plan to do a 10k OCI or every 2yr with a filter change at 5k or 1yr. Based on my previous uoa, fuel dilution is present when winters drop to 0F but absent during mild winters. The corresponding flash point are observed inversely proportional to fuel dilution in the uoa. My concern is during retirement 10k mi is a 2yr OCI and now fuel dilution during winter become more of an issue. Euro has better HTHS than premium plus. What is the recommendation before placing an order during HPL 4th of July sale?