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Steve Tinker · 05-07-2011, 06:30 PM

We've had Castrol Edge packaged oils here in Australia for about 4 years now - but like you guys in the UK / US there is no *W40 grade available.
I have used Castrol lubricants in my bikes and cars for over 30 years - always with good results, but since I cannot get the correct grade for my Boxster S, I have gone over to Shell Helix Ultra 5W40 oil. If its good enough for Ferrari (as they point out on the packaging) its good enough for my lowly M96 engine.....

As a point of interest, the first time I used the Shell oil (after it had been run exclusivly on Mobil 1 during the dealer warranty servicing) the oil darkened considerably after 3,000 miles of use. I changed the oil & filter again and now it hardly changes colour at all after the same 3,000-4,000 miles of service. Perhaps the Mobil 1 doesn't have the same amount cleaning agents that the Shell oil has....

05-07-2011, 06:30 PM	#5
Steve Tinker Registered User Join Date: Dec 2008 Location: Queensland, Australia Posts: 1,522	We've had Castrol Edge packaged oils here in Australia for about 4 years now - but like you guys in the UK / US there is no *W40 grade available. I have used Castrol lubricants in my bikes and cars for over 30 years - always with good results, but since I cannot get the correct grade for my Boxster S, I have gone over to Shell Helix Ultra 5W40 oil. If its good enough for Ferrari (as they point out on the packaging) its good enough for my lowly M96 engine..... As a point of interest, the first time I used the Shell oil (after it had been run exclusivly on Mobil 1 during the dealer warranty servicing) the oil darkened considerably after 3,000 miles of use. I changed the oil & filter again and now it hardly changes colour at all after the same 3,000-4,000 miles of service. Perhaps the Mobil 1 doesn't have the same amount cleaning agents that the Shell oil has.... __________________ 2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley. 2001 MV Agusta F4.