Zee09
$200 Site Donor 2023
5w30 offers better UV protection
Yup. The 1UR-FE in my GX has 0W-20 only here in the US. They even frown upon 5W-20.Check OM viscosity call-outs for the same engine used in other countries.
They may also recommend a specific brand of oil. Was the engine designed around that brand as well?The manufacturer recommends 5W20 and may have designed engine operation around it. It did not recommend 5W30. /thread
"If" and "throughout" are the key words. Give "if" and "throughout" more headroom by going thicker than 20.Oil keeps the parts separated. Thicker oil keeps the parts seperated more. If the 20 keeps the parts speperated through out the most severe operating conditions well,, the parts are separated .
But 5w20 is less affected by gravitational pull thus lubricating the top end more effectively"If" and "throughout" are the key words. Give "if" and "throughout" more headroom by going thicker than 20.
They may also recommend a specific brand of oil. Was the engine designed around that brand as well?
Actually, BMW requires oils with their own approvals, not specific brands. I guess you just stated a non-fact. But who’s to be surprised...Typically, no. But if it's a BMW, they will run your oil through a Oil Sniffalation 3000 to determine if you used Castrol acquired from the dealer.
And if you didn't, that is why the German Engin-froiden-neering failed.
These are just facts. I just state the facts.
Typically, no. But if it's a BMW, they will run your oil through a Oil Sniffalation 3000 to determine if you used Castrol acquired from the dealer.
And if you didn't, that is why the German Engin-froiden-neering failed.
These are just facts. I just state the facts.
Oil keeps the parts separated. Thicker oil keeps the parts seperated more.
No, but they can be separated less with a lower MOFT. So you’re right, it’s about “film strength”.Someone will have to explain this part to me. Can internal engine parts actually be separated more? I thought it was about film strength?
No, but they can be separated less with a lower MOFT. So you’re right, it’s about “film strength”.
I always start from the extremes. Two identical engines, one running with distilled water as lubricant, the other with some 70W racing oil. We all know which one we would pick as our daily driver. The practical “sweet spot” is in between, however. That will be determined by “countless” hours of engineering work, millions of dollars, and - sadly - by politics.I think the term “separated” is being used improperly in this respect. That’s what is making me curious. Of course we are talking about very minute measurements here.
What is you live in Australia? What then !!!.But 5w20 is less affected by gravitational pull thus lubricating the top end more effectively
In Aussie land we install the motors upside downWhat is you live in Australia? What then !!!.
Someone will have to explain this part to me. Can internal engine parts actually be separated more? I thought it was about film strength?
Basic tribology shows that higher viscosity results in more film thickness/MOFT between moving parts - been that way since the beginning of time. And there is a distinct difference between "film thickness" (MOFT) and "film strength".No, but they can be separated less with a lower MOFT. So you’re right, it’s about “film strength”.
It is some thing that stressed me out for decades.. I feel better now.In Aussie land we install the motors upside down
Yes I believe you are.It is some thing that stressed me out for decades.. I feel better now.
Let's just call is separated because with out using what ever term we want to call proper oil keeps the parts separated. Liquid ball bearings and or intelligent molecules."If" and "throughout" are the key words. Give "if" and "throughout" more headroom by going thicker than 20.