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Started by 94touring, March 01, 2021, 04:06:18 PM
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Quote from: cstudep on April 26, 2022, 07:55:59 PMAdditives are always a gamble, you don't really know what's already in the fluid you are adding to nor do you really know what's actually in what you are adding. Who knows if the 2 are actually even compatible.I was at wal-mart tonight and decided to stroll on over to the oil area since I needed some gear oil for the rear end in my old diesel truck. Sure enough they had the classic castrol stuff. I was also checking out the various diesel oils and noticed they are nearly all 15w-40 these days. So is that preferable over the 20w-50? The only 10w-40 stuff was just your regular car oils.I need to read through the PDF you posted again, there was lots of info in there. I still have quite a bit of VR1 20w-50 so plan to use that up but need to stock back up on something because I only have enough of the VR1 left to do 1 more oil change.
Quote from: 94touring on May 31, 2022, 02:25:55 PMLengthy read with some interesting information. https://540ratblog.wordpress.com/2013/06/20/motor-oil-wear-test-ranking/
Quote from: 94touring on June 02, 2022, 03:34:55 PM "says air cooled engines run hotter and need thicker oils"That also caught my attention Richard as not true.
Quote from: Richard1 on June 02, 2022, 04:34:37 PMQuote from: 94touring on June 02, 2022, 03:34:55 PM "says air cooled engines run hotter and need thicker oils"That also caught my attention Richard as not true. VW's used thicker oils back in the early days, mainly because they had no oil filters, so tolerances were designed for more particles to circulate without too much damage, and 20W-50, or SAE 50 originally, would encapsulate the particles and circulate through the wide tolerances.