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Which grade oil

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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.

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I use 10/40 semi in all my old cars.

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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 do Divorces, Great Coffee, and Car Electrics all have in common?

They all start with GOOD Grounds.

Where are my DIY Links?

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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…

Quantum Synta 10w40 (5-Litre) | 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.

TRIPLE QX Semi Synthetic Engine Oil - 10W-40 - 5ltr

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

1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 300,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.

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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.

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

Current rides:

2003 BMW 330d Manual Saloon Msport
1985 GTI cabriolet black edition (42k miles)
1999 Triumph Daytona 955i Post apocalyptic, rat, brat, scrambler, steam punk, cafe racer

IMG_20190803_123357.jpg

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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.

What do Divorces, Great Coffee, and Car Electrics all have in common?

They all start with GOOD Grounds.

Where are my DIY Links?

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Genuine VW filter 4.62
Genuine 056115561G Oil Filter | AVS Car Parts

Mann filter 5.59 and 33% off with discount.
|Car PartsRetailer

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

SUMP PLUG WASHER SINGLE (12,00 x 17,00 x 1,50)|AccessoriesRetailer | Euro Car Parts


1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 300,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.

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Briano1234 good to know, thanks

Current rides:

2003 BMW 330d Manual Saloon Msport
1985 GTI cabriolet black edition (42k miles)
1999 Triumph Daytona 955i Post apocalyptic, rat, brat, scrambler, steam punk, cafe racer

IMG_20190803_123357.jpg

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

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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.

What do Divorces, Great Coffee, and Car Electrics all have in common?

They all start with GOOD Grounds.

Where are my DIY Links?

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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
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