49er
Well-Known OPE Member
- Local time
- 12:04 AM
- User ID
- 3315
- Joined
- Jun 1, 2017
- Messages
- 38
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- Location
- milltown indiana
Understanding base oil groups is important to choosing an oil. Yamalube 2R looks to be mostly Group 1&2 base oil. Group 1&2 oils smoke more so they add polybutene which puts a sticking residue on everything at elevated temperatures. Many additives attempt to correct for poor base oil.
" Oil Groups: since group 3 oil is technically a refined petroleum oil but also legally a "synthetic" oil (because it has such good properties) I choose to describe oils by their content of the different groups of oil instead of saying mineral/semi-synthetic/full-synthetic*. Group 1-3 are refined petroleum oils. Group 4 is synthetic PAO oil. Group 5 is synthetic and usually ester. The higher the number, the higher the quality. This info is from the oil manufacturers** which sometimes makes it obvious they are lying about its content (labeling it as full synthetic when it's not) or at what ratio you can use it at."
" Oil Groups: since group 3 oil is technically a refined petroleum oil but also legally a "synthetic" oil (because it has such good properties) I choose to describe oils by their content of the different groups of oil instead of saying mineral/semi-synthetic/full-synthetic*. Group 1-3 are refined petroleum oils. Group 4 is synthetic PAO oil. Group 5 is synthetic and usually ester. The higher the number, the higher the quality. This info is from the oil manufacturers** which sometimes makes it obvious they are lying about its content (labeling it as full synthetic when it's not) or at what ratio you can use it at."