Hermann
Site Donor 2023
5W-XX the five is what's important for cold starts. it will be fine.
That's because it's good for most all temps encountered in North America, and because it boosts fuel economy.Agree - but the majority of PVL’s spec’d by the OEM’s are 5W or 0W … so it can be a BITOG thing - but betting most folks “follow the fill cap” …
Run a jug of 0W40 FS M1 through Winter. Save the RL to Summer. Though it is too thick.
The viscosity of the Redline you chose is above 100 cSt at very warm ambient temps.!
Which means loss of power and response, especially off-boost and in moderate driving, then Hard starting and slow warmup at near freezing temps
You can tell me I am wrong at the end of the Summer
It was just 0 deg F here last night and I am in New Hampshire near the coast, near Maine.
Have fun, Regardless! I miss the EJ engines even if they were grenades in N.A. open-deck SOHC VTEC form.
My point was the RL viscosity is very high at cool (~1000cSt) to ambient temps and will provide very suboptimal warmup driving which could extend for 15 mins or more in cold weather. Note again that the Redline is a marginal 50 grade, where the M1 is marginal 30 grade. Then add having substantial moisture in the sump to contend with in the Winter - assuming some PAO, Di-ester base %.5w is 5w, it is good for cold starting down to about -30C, kv40 makes no difference. It doesn't matter if it 100cst at 104°F, that's not too thick to pump or crank.
A thicker oil is going to warm up faster than a thinner one.My point was the RL viscosity is very high at cool (~1000cSt) to ambient temps and will provide very suboptimal warmup driving which could extend for 15 mins or more in cold weather. Note again that the Redline is a marginal 50 grade, where the M1 is marginal 30 grade. Then add having substantial moisture in the sump to contend with in the Winter - assuming some PAO, Di-ester base %.
That is my concern. - Ken
Because there are reasons that are beyond technical and not necessarily in the best interest of the manufacturer nor the consumer.Why not just trust what the book/engineers tell you? You trusted them enough to purchase a car they designed right?
True. But you want thinner oil at extremely cold temperatures.A thicker oil is going to warm up faster than a thinner one.
Also vehicle dependent - my Pentastar warms up way faster than my L83 - on the same oil …True. But you want thinner oil at extremely cold temperatures.
Of course. Too many design variables.Also vehicle dependent - my Pentastar warms up way faster than my L83 - on the same oil …
I lean towards the BrocL doctorate - you can always step up on viscosity later:Why not just trust what the book/engineers tell you? You trusted them enough to purchase a car they designed right?
I think you might agree that the goal in cold weather warmup is to convert engine torque into tractive power, not to take an already abysmal efficiency and divert a goodly % of that energy into heating a sub-optimally specified lubricant through mechanical shearing.A thicker oil is going to warm up faster than a thinner one.
Yes because CAFE is an iron fist that dictates all. Engineers have no say in it, right?Because there are reasons that are beyond technical and not necessarily in the best interest of the manufacturer nor the consumer.
The engineers are working very hard to design engines and vehicle systems that allow the automaker to meet CAFE requirements. And we all are paying for it.Yes because CAFE is an iron fist that dictates all. Engineers have no say in it, right?