Talking of oil - the 2013 handbook says we should use "dexos 2 " oil. Never heard of it.
Castrol says :
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EDGE 5W-40</td><td rowSpan="6" width="175">
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VAUXHALL</td><td vAlign="top" rowSpan="6">
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Antara 2.4 AWD (A24XE - 123kW)</td></tr><tr><td>
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2011 - </td></tr><tr><td> </td></tr><tr><td style="white-space: nowrap;">


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</td></tr><tr><td ="recommendText" ="#ececed" vAlign="top" rowSpan="2" width="14">
</td><td ="#ececed" vAlign="top" rowSpan="2" width="181"> Engine (A24XE) </td><td ="#ececed" vAlign="top" width="215"> EDGE 5W-40 (a) </td><td ="#ececed" vAlign="top" rowSpan="2" width="140"> 4.7 </td></tr><tr><td ="#ececed" vAlign="top" width="215"> Magnatec 5W-30 C3 </td></tr><tr><td ="recommendText" ="#ececed" vAlign="top" rowSpan="1" width="14">
</td><td ="#ececed" vAlign="top" rowSpan="1" width="181"> Manual Transmission (D33) </td><td ="#ececed" vAlign="top" width="215"> Universal 75W-90 </td><td ="#ececed" vAlign="top" rowSpan="1" width="140"> 2.3 </td></tr><tr><td ="recommendText" ="#ececed" vAlign="top" rowSpan="1" width="14">
</td><td ="#ececed" vAlign="top" rowSpan="1" width="181"> Automatic Transmission (AW55-51LE) </td><td ="#ececed" vAlign="top" width="215"> ATF Multivehicle </td><td ="#ececed" vAlign="top" rowSpan="1" width="140"> 7.0 </td></tr><tr><td ="recommendText" ="#ececed" vAlign="top" rowSpan="1" width="14">
</td><td ="#ececed" vAlign="top" rowSpan="1" width="181"> Differential </td><td ="#ececed" vAlign="top" width="215"> - </td><td ="#ececed" vAlign="top" rowSpan="1" width="140"></td></tr><tr><td ="recommendText" ="#ececed" vAlign="top" rowSpan="1" width="14">
</td><td ="#ececed" vAlign="top" rowSpan="1" width="181"> Coolant </td><td ="#ececed" vAlign="top" width="215"> Refer to main dealer </td><td ="#ececed" vAlign="top" rowSpan="1" width="140"> 9.0 </td></tr><tr><td ="recommendText" ="#ececed" vAlign="top" rowSpan="1" width="14">
</td><td ="#ececed" vAlign="top" rowSpan="1" width="181"> Brake Fluid </td><td ="#ececed" vAlign="top" width="215"> React Performance DOT 4 </td><td ="#ececed" vAlign="top" rowSpan="1" width="140"></td></tr><tr><td ="recommendText" ="#ececed" vAlign="top" rowSpan="1" width="14">
</td><td ="#ececed" vAlign="top" rowSpan="1" width="181"> Power Steering </td><td ="#ececed" vAlign="top" width="215"> Refer to main dealer </td><td ="#ececed" vAlign="top" rowSpan="1" width="140"> 1.1 </td></tr><tr><td ="recommendText" ="#ececed" vAlign="top" rowSpan="1" width="14">
</td><td ="#ececed" vAlign="top" rowSpan="1" width="181"> Rear Differential </td><td ="#ececed" vAlign="top" width="215"> Refer to main dealer </td><td ="#ececed" vAlign="top" rowSpan="1" width="140"> 0.7 </td></tr><tr><td ="recommendText" ="#ececed" vAlign="top" rowSpan="1" width="14">
</td><td ="#ececed" vAlign="top" rowSpan="1" width="181"> Transfer Box </td><td ="#ececed" vAlign="top" width="215"> Syntrax Universal Plus 75W-90 </td><td ="#ececed" vAlign="top" rowSpan="1" width="140"> 0.9 </td></tr><tr><td ="#ececed" colSpan="4">
</td></tr><tr><td ="#ececef" vAlign="top"> </td><td ="#ececed" vAlign="top" colSpan="3"><table border="0"><t><tr><td ="recommendText" vAlign="top">a. </td><td ="recommendText" vAlign="top">Alternative recommendations: <-25°C, 0W-30; -25°C, 0W-40; -25°C, 5W-40</td></tr></t></table></td></tr></t></table>
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</td></tr><tr><td ="recommendText" vAlign="top" width="25%">Engine - Miles Max</td><td ="recommendText" vAlign="top">20000</td></tr><tr><td ="recommendText" vAlign="top" width="25%">Engine - Km Max</td><td ="recommendText" vAlign="top">30000</td></tr><tr><td ="recommendText" vAlign="top" width="25%">Engine - Months Max</td><td ="recommendText" vAlign="top">12</td></tr></t></table>