1999 1.6 Correct top-up oil - liefy
Hi,

I have a 1999 1.6 16v Astra Club. My garage told me to use a 10w-40 semi synthetic oil for the engine. The manual says it should be of ACEA A3-96 type.

I have some Shell helix plus oil which is 10w-40. It is synthetic but doesnt specify full or semi. It also says it is ACEA A3/B3-98.

Would it be risky to use if i'm not sure if it is semi synthetic and the fact that on the can the ACEA ends in "98" whereas in the manual it suggests "96"?

Thanks again
1999 1.6 Correct top-up oil - John S
Most likely a semi-synthetic, and it's fine for your car. The recommended oil for that era of Vauxhall is a semi-synthetic 10W/40 A3/B3. A3/B3 98 is simply a later (and better) spec than the earlier (19)96 oil.

JS