Hello everybody
This is my first post after almost two years of being a member of the forum. I live in Scotland and own a modified Bora 4 Motion with a 3.2 BFH with Schrick cams, manifold, sports cats etc.
In 2015 I replaced the chains at 138,000 miles as poor values were recorded in MWB 208 and 209 (-7 and -4).
During the replacement I was shocked to see black sludge underneath the NW cover but at that time I did not understand the cause was LL oil - see attached photos of black mud on cylinder head. I cleaned the chain case and NW covers before refitting.
Oil changes from 100,000 miles were performed every 5,000 miles using LL3 but I cannot remember the previous service history to 100,000 miles - I would need to check my records.
From 138.000 miles to 175.000 miles were driven on LL3 Oil at 5000 mile changes all with oil flush.
Thankfully MWB 208 and 209 values are currently still -3 and -2.
I discovered this forum in 2016 and finally discovered the truth that LL Oil was responsible for the black sludge and after lots of reading on why the chains stretch I decided to change from LL3 to Super Addinol Light.
At the last oil service I performed an oil cleaning flush using Liqui Moly Pro Line Engine Flush (It is very difficult to get Lambda Oil Primer in the UK) and switched to Addinol Super Light 5w-40.
I have bought some Addinol Flushing Oil and some Lambda Oil Primer from the Forum Shop and have 14.5L of Addinol Super Light at my disposal.
However, I am concerned that too strong an oil rinse will cause oil pump blockage and seek advice from the forum on the best way forward/procedure.
I've now driven 1600 Miles on the Addinol which is now a dark honey color and wish to oil flush/rinse.
I think I should drain 2.5l of used oil and refill 2.5l with fresh Addinol SL 5W40 (This uses up my extra Addinol and after two changes below leaves 1l extra for emergency)
Drive vehicle until engine oil is hot and then add Addinol Flushing Oil.
Run on stationary idle for 10 minutes and then drain Oil for 20 minutes.
Change filter and refill with 5.5l of fresh Addinol.
Drive vehicle until engine oil is hot.
Add Lambda Oil Primer and run on stationary idle for 15 minutes - but no driving as not sure how bad black contamination will be?
Drain oil for 20 minutes
Add fresh Addinol, new filter and drive 1500-2000 miles and then flush again with Lambda Oil Primer?
I didn't vote for Brexit and the English can keep that sh*t so where can I buy Addinol now?
[size=10] [/size][size=10]After the flush the oil came out almost black! [/size][size=10] [/size]
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I then drove 1200 more miles on the new oil and at the weekend filled with 250ml of Lambda Oil Primer and drove 50Km of varying roads. The oil came out a dark honey colour and still appeared to be relatively clean. After changing the oil the car is very smooth and when I open the bonnet ALL I can hear are injectors ticking - there is absolutely zero noise from the chain case! I am so happy with the result. 