vxcalais_01
Well-Known Member
- Joined
- Jul 18, 2006
- Messages
- 1,355
- Reaction score
- 42
- Points
- 48
- Location
- Melbourne
- Members Ride
- VX V6 Calais 3.8 2001
10w30 was listed when these came out as Holden needed it to pass emission controls. But they changed to 10w40 on first service if they noted oil being lost. The stores didn't really have much 10w30 in those days anyway and viscosity modifiers were poo.
If your Engine seals are in good nick then run a 5w40/10w40/5w50 for cooler weather, and up to a 15/40 or 20w60 (smokes a bit, some drips). If you don't ever want to ever worry and can resist shiny looking labels, run a Dual fuel 15w40 oil with a S rating and a C rating. These are mostly labelled as diesel oils and often cheaper. They are also common in Synthetic base oils now so great if you have a Turbo on the commodore. HPR Diesel 5 or 15 or Nulon APex + Long Life (Synthetic/X-Pro High Torque(Cheaper). Even the Gulf Western Top Dog is decent when on special for 10 litres. Our cars came with an SJ oil rating requirement over 20 years ago. The new oil ratings of SN and SP is like AI technology compared to back then due to Engine wear /Enviro requirements. Don't overthink it. Your only driving it 2 to 3 times a year so cold starts is barely an issue for you.
If your Engine seals are in good nick then run a 5w40/10w40/5w50 for cooler weather, and up to a 15/40 or 20w60 (smokes a bit, some drips). If you don't ever want to ever worry and can resist shiny looking labels, run a Dual fuel 15w40 oil with a S rating and a C rating. These are mostly labelled as diesel oils and often cheaper. They are also common in Synthetic base oils now so great if you have a Turbo on the commodore. HPR Diesel 5 or 15 or Nulon APex + Long Life (Synthetic/X-Pro High Torque(Cheaper). Even the Gulf Western Top Dog is decent when on special for 10 litres. Our cars came with an SJ oil rating requirement over 20 years ago. The new oil ratings of SN and SP is like AI technology compared to back then due to Engine wear /Enviro requirements. Don't overthink it. Your only driving it 2 to 3 times a year so cold starts is barely an issue for you.
Last edited: