ISO VG 150

ISO VG 150 collects 58 oils from Castrol, Chevron, Mobil, Shell in this catalogue. The ISO viscosity grade is the oil's thickness at 40 °C, plus or minus 10 percent. Match the grade the machine manual names before you compare brands. The figures below are the makers' typical values, not a batch certificate. Confirm the current data sheet before you fill a machine. Published viscosity indexes run from 89 to 247. A higher index thins less between 40 °C and 100 °C. That matters in a cold start and in a hot gearbox, and it is not the same thing as the ISO grade. Pour points run from -54 °C to -6 °C. The machine should still start at least 5 °C warmer than the pour point of the oil you pick. 21 are flagged synthetic and 37 are not. Synthetic here means the maker said so. It is not a viscosity grade and it is not, by itself, a reason to leave the ISO grade the manual asks for. 5 of these oils are PAG (polyalkylene glycol). PAG does not mix with mineral oil or PAO. Drain and flush before a change into or out of a PAG, and do not treat a PAG as an equivalent of either. 9 can be bought in a small package from the retailers linked on each oil page. The others have no listing yet. A missing buy button is not a comment on the oil. Use the table to sort the grade, the viscosity index and the pour point, then open an oil for its data sheet, its equivalents and its buy links. Equivalents on this site are other published oils in the same application and grade. They are not exact substitutes, and the OEM specification still governs.

Oil	ISO	KV40	VI	Pour	Buy
Shell Omala S3 W 150	150	146	247	-39	—
Chevron Cetus EliteSyn NG 150	150	150	230	-48	—
Castrol Optigear Synthetic 800/150	150	150	210	-36	—
Mobil Glygoyle 150	150	150	210	-33	—
Shell Omala S4 WE 150	150	136	188	-42	—
Mobil Mobil SHC Gear 150	150	150	176	-54	Yes
Shell Omala S4 GXV 150	150	150	169	-45	—
Castrol Optigear Synthetic PD 150 ES	150	158	167	-51	—
Mobil Mobil SHC 629	150	150	166	-48	Yes
Chevron Meropa Synthetic EP 150	150	142	162	-51	—
Chevron Tegra Synthetic Gear 150	150	142	162	-49	—
Chevron Clarity Synthetic Machine Oil 150	150	143	159	-48	—
Chevron Meropa EliteSyn XM 150	150	151	159	-36	—
Castrol Optigear ALR X1	150	150	150	-42	—
Castrol Optigear Synthetic X/150	150	150	150	—	—
Shell Morlina S4 B 150	150	150	149	-54	—
Castrol Optigear Synthetic ALR 150	150	150	148	-45	—
Chevron Cetus PAO 150	150	150	145	-49	—
Chevron Cetus Hipersyn 150	150	158	142	-35	Yes
Castrol Optigear RMO	150	150	133	-48	—
Castrol Optigear Synthetic RO 150	150	150	130	-45	—
Mobil Excel 150	150	155.6	120	-34	—
Chevron Meropa XL 150	150	150	115	-36	—
Chevron Rando HD 150	150	147.9	103	-12	—
Chevron Clarity Machine Oil 150	150	143	101	-15	—
Shell Air Tool Oil S2 A 150	150	150	101	-24	—
Castrol Optigear BM 150	150	150	100	-18	—
Chevron Clarity Saw Guide Oil 150	150	143	100	-30	—
Chevron Meropa 150	150	150	100	-26	Yes
Mobil Rarus 429	150	147.3	100	—	—
Shell Omala S2 G 150	150	150	100	-24	—
Chevron Aries 150	150	150	99	-30	—
Mobil DTE 28	150	142.8	98	-15	—
Mobil Nuto H 150	150	150	98	-18	—
Shell Omala S2 GX 150	150	150	98	-24	Yes
Shell Paper Machine S3 M 150	150	150	98	-21	—
Castrol Optigear 1100/150	150	151	97	-27	—
Mobil PM Ashless 150	150	150	97	—	—
Mobil 600 XP 150	150	150	97	-24	Yes
Mobil EP 150	150	150	97	-24	—
Chevron Regal R&O 150	150	143	96	-21	Yes
Mobil Extra Heavy	150	146	96	-21	Yes
Mobil Vacuoline 128	150	150	96	-9	—
Mobil Vacuoline 528	150	146	96	-21	—
Castrol Hyspin AWS 150	150	150	95	-15	—
Castrol Optigear EP 150	150	148	95	-24	—
Mobil PM 150	150	150	95	-6	—
Mobil Teresstic 150	150	150	95	-12	—
Shell Morlina S2 B 150	150	150	95	-15	—
Shell Morlina S3 BA 150	150	150	95	-12	—
Shell Paper Machine S2 M 150	150	150	95	-15	—
Chevron Paper Machine Oil Premium 150	150	143	91	-15	—
Chevron Cetus DE 150	150	152	89	-34	—
Castrol Hyspin VG 150	150	150	—	-15	—
Chevron Red Chain Bar Oil 150	150	143	—	-24	—
Mobil Vactra Oil No 3	150	156	—	-6	Yes
Shell Corena AP 150	150	150	—	-39	—
Shell Corena S2 P 150	150	155	—	-30	—