Is there an oil level plug on the gearbox of an Astra 1.3 cdti, or is the whole unit sealed?

I just want to check the oil levelIs there an oil level plug on the gearbox of an Astra 1.3 cdti, or is the whole unit sealed?
if its manual then ther is a level plug on the side of the box next too the drive shaft on the nearside very difficult too get too you just pump the oil in untill the fluid starts pouring back outIs there an oil level plug on the gearbox of an Astra 1.3 cdti, or is the whole unit sealed?
if it's a new car then I think it's a sealed unit, but can be maintained by a competent mechanic, on older cars it was user servicable





Ex Astra owner