DD - but according to Vauxhall 5W-30 should be used for ALL Corsa '01-on, not just those on ECOFLEX service schedule.
"Ordinary" 5W-30 ACEA-A3/B3 is fine for standard service intervals but the longlife specification 5W-30 (GM-LL-A/B-025) is needed for extended intervals.
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Deoes any of this matter?
If you look at the car manufacturers spec's for oil, they usually suggest a range depending on the ambient temp of where the vehicle is operated. In the UK, pretty well anything is usable.
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DD - but according to Vauxhall 5W-30 should be used for ALL Corsa '01-on not just those on ECOFLEX service schedule.
The 5w/30 & 10/w40 are both ACEA A3 / B3, so initially I stand by my earlier suggestion that either oil will be ok.
However, looking at the OP's posting history, he has a 1.3 CDTi. correct me if I'm wrong, but strictly speaking the oil used should have been 5w/30 GM-LL-B-025.
The GM-LL-B-025 is long life oil. If the OP is sticking to the 2yr / 'x' mileage regime, then this is what should have been used. However, if 1 yr / 'x' mileage regime is preferred, then my personal recommendation is still either oil.
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Vauxhall's website information is clear - 5W-30 should be used for all Corsa '01-on, with 10W-40 only being suitable for earlier Corsas.
Not all 10W-40 are ACEA-A3/B3.
While anyone is entitled to state their personal recommendations, Vauxhall are clear that only 5W-30 should be used on Corsa '01-on.
I agree that if the 2yr/'x' miles regime is followed, then GM-LL-B-025 must be used for a 1.3CDTi.
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I have the Fiat version of the 1.3CDTI ( the 1.3 Multijet). I rang one of the Fiat service managers to see if this thinner 5w 30 longlife oil could be used instead of the Fiat spec 5w40.(On the Vauxhall 2 year service interval instead of Fiats 12 months.)
Answer, "No way!" So whats different about the 2 engines? Surely the bearing clearances for the oil viscosity is identical? As the engines come from the same plant..
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My 07 Astra has a 1yr/20,000 service interval, like most recent Vauxhalls. 2 year servicing isn't now mentioned and GM-LL-A-025 or GM-LL-B-025 is 'mandatory'. The factory oil is a 5-30 synthetic.
10-40 isn't going to be synthetic.
JS
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