Opel Club Cape Town

Hi guys

Can anyone possibly give me some advise I recently did a minor service on my car .

Basically oil 20/50 , oil filter , air filter , petrol filter , plugs and new bogi leads (old ones had a hole in one.

But now my car seems to have zero power in first and second , third and up is fine but those first two are iffy.
There is no shudder and it doesn't seem to be missing just the power is gone.

I was thinking maybe I put the wrong plugs in or the oil could be incorrect the manual said 20/50 but I've read I can also use 15/40 .

I put in the NGK plugs the guy gave me at Master Parts but I also heard I should be using the double head plug.

I must say I know nothing about cars and am simply learning as I go along.

Alternatively if someone can point me in the right direction to have my main gear box seal replaced it seems to be leaking a little I would also like to have the sump gasket replaced .It's not leaking but I know it's old and is due.

Please really appreciate some feedback .

Opel Kadet 160 IS think it's a 93 94 model.

What car?

_________________
Opel Club Cape Town Member