Engine oil

I have a standard 1983 mk1 Golf GTI cabroilet .What grade engine oil do l need.

Uk car need 10W 40 semi synthetic oil and use a good quality oil filter, MANN or genuine VW are the ones to use.

Oil I've been using in my 1988 GTi cabriolet for many years and approximately 200,000 miles.

https://www.eurocarparts.com/p/triple-qx-semi-syn-engine-oil-10w-40-5ltr-521776011

Oil filter.
https://www.eurocarparts.com/p/mann-filter-oil-filter-501770059

Thank you ..  

Just don't use Jean Erik filters, stay away from Store Branded, Bosch, or Fram.

Known good ones that I have used that didn't give me the blinky light from Hades are:

STP
Mobile1
Mann
Mahl
Genuine VW
Pureolator GOLD
Napa Gold
WIX

I personally have run 10W40 or 20W50 in all my 4 bangers since I was 13yrs old except for my 81 Golf Diesel, which was 10w30 CC/CD.  Never an issue, but then again I used only WIX filters.