Which grade oil

Is it recommended for a 1989 mk1 golf gti cabrio to use 20/50 oil ??? I have looked at previous threads and more people seem to go for the 10/40. What does the manual say abouit oil type? Thank you.

I use 10/40 semi in all my old cars. 

I use 20W50 on my cabbies, and never had an issue.
I used 10W40 in my Diesel Rabbit for 20 years.

Just stay away from Storebranded or Fram/Bosch filters.

Stay with WIX, Mann,Mahl, genuine VW.

10w40 semi synthetic oil is what I've been using in both my cars for about 15 years.

Stuff VW would put in your car…

AVS Car Parts

Stuff I use but I don't pay that much for it… when on offer or use discount code it's about £12.

https://www.eurocarparts.com/ecp/p/car-parts/engine-parts/engine-parts1/engine-oils/?521776011&1&cc5_245

Stay away from Castrol oil as it's not as good as it used to be….

Briano1234 said

I use 20W50 on my cabbies, and never had an issue.
I used 10W40 in my Diesel Rabbit for 20 years.

Just stay away from Storebranded or Fram/Bosch filters.

Stay with WIX, Mann,Mahl, genuine VW.

What's the issue with Bosch filters? I always thought they were good quality.

I was about to ask the exact same question. Whats up with Bosch and Fram?

they have cost reduced the manufacturer of their filters.
Specifically they don't have the anti-drain back valve on the filters.  While that is usually for side mounted filters and not specifically for the way dubs hang, the other itty bit that the valve dies is to assist in stabilizing the oil pressure at idle.

I have had in the past using Fram or Bosch a intermittent flashy light at idle even tho I had over 1 bar on the gauge.

Switched to Wix, the problem went away magically.


Ironically most of the cars that I see in the wrecking yard have Fram or Jean Erics filters on them  co-inky-dink?

Matter of fact the Cabriolet that I got a Pristine Dash Bezel off of yesterday, had a Fram Filter.

Genuine VW filter £4.62
https://www.vwspares.co.uk/product_info.php?products_id=1179

Mann filter £5.59 and 33% off with discount.
https://www.eurocarparts.com/ecp/c/Volkswagen_Golf+Cabriolet_1.8_1989/p/car-parts/regular-service/car-service-parts/oil-filter/?501770059&1&df2e88f773d5c865f404b9dd795cf6fb0b433883&000231

Don't forget a new sump plug washer, 49p

https://www.eurocarparts.com/ecp/c/Volkswagen_Golf+Cabriolet_1.8_1989/p/car-accessories/car-components-accessories/nuts-bolts-clips-and-ties/washers/?333771221&0&cc5_935

Briano1234 good to know, thanks

Interesting, never knew that.
Surely we shouldn't avoid Bosch fuel and air filters or any of their other products?

Guinness_Ben said

Interesting, never knew that.
Surely we shouldn't avoid Bosch fuel and air filters or any of their other products?

No, I still use Fram Air filters and or Bosch, or even Store Branded, as they don't seem to be an issue, Oil filters are another matter.

halfords classic oil ..in a mk1 golf 1.8 for me was a great choice car sounds and runs so much better..always used castrol 10 w 40 but the older engines need the heavier stuff