So say you have a 15W-40 HDEO, with a HTHS of around 4.5.
And you have a 20W-50 PCMO, again with an HTHS of 4.5.
As i understand the main bearings are the place most influenced by higher or lower HTHS viscosities.
When cold i assume the oil pressure would be lower with the 15W-40, but when hot would both oils give the same or a similar oil pressure?
And you have a 20W-50 PCMO, again with an HTHS of 4.5.
As i understand the main bearings are the place most influenced by higher or lower HTHS viscosities.
When cold i assume the oil pressure would be lower with the 15W-40, but when hot would both oils give the same or a similar oil pressure?