So ran a search and surprised I couldn't find this asked already from this perspective, but apologies if I just missed it.
Have some PYB 5w-30 Syn Blend SP and a couple of quart bottles of PYB SN+ I was recently given that I've been considering using for my next change around the corner but being mid Sept this fill would run me through about mid to late November here in Colorado with frequent trips into the colder higher altitudes.
Which got me to wondering, that while we all know the cold weather startup advantages of a full or 100% synthetic how cold exactly is TOO cold for a modern "conventional" oil before it starts to become a likely issue at startup? We've seen the cold pour "tests" on Youtube but 90% of us won't be running into -25F temps even at higher altitudes here in Colorado so I don't find those really relevant or helpful (or accurate since pumps don't just drip oil into the motor from a cup lol).
So at what temps does a 5w-30 conventional start becoming a problem? 20 degree's F? 10 degree's F? I know the CCS falls within range but that doesn't really tell us much in terms of flow rate at startup right?
Educate us BITOG!
Quick Edit: For my personal application it would be going into a Subaru 3.6 H6 and was originally designed for conventional oil anyway, so no issues as far as compatibility with the motor is concerned.
Have some PYB 5w-30 Syn Blend SP and a couple of quart bottles of PYB SN+ I was recently given that I've been considering using for my next change around the corner but being mid Sept this fill would run me through about mid to late November here in Colorado with frequent trips into the colder higher altitudes.
Which got me to wondering, that while we all know the cold weather startup advantages of a full or 100% synthetic how cold exactly is TOO cold for a modern "conventional" oil before it starts to become a likely issue at startup? We've seen the cold pour "tests" on Youtube but 90% of us won't be running into -25F temps even at higher altitudes here in Colorado so I don't find those really relevant or helpful (or accurate since pumps don't just drip oil into the motor from a cup lol).
So at what temps does a 5w-30 conventional start becoming a problem? 20 degree's F? 10 degree's F? I know the CCS falls within range but that doesn't really tell us much in terms of flow rate at startup right?
Educate us BITOG!
Quick Edit: For my personal application it would be going into a Subaru 3.6 H6 and was originally designed for conventional oil anyway, so no issues as far as compatibility with the motor is concerned.