Hello Hauden,
Please do not suspect head gasket issues until proved to be so.
What you describe can be typical of the effects of condensation, and can be aggravated by short runs, when the engine does not operate at optimum temperature for long enough.
If this were mine, I would be acquiring 5 litres of fresh oil ( I only use Quantum Longlife 3 - as was recommended by VAG, and available on the auction site), - please check your grade, if not 5w/30, a quality oil filter ( I only use Mann if not using Audi) , before removing the ‘mayo’ build up, and taking the car on a 20 mile run. Switch off and again clean off any remaining ‘mayo’ before draining off the old oil, fitting the new filter and refilling to the max. mark with the/new oil, and checking for any leaks.
It would be wise to take the car on another 20 mile run and again remove any remaining ‘mayo’. Changing the oil again in 1K may be worthwhile.
One question I would ask is:- does the car use coolant? If it doesn’t use coolant then your ‘mayo’ just cannot be due to head gasket issues.
Perhaps you can let us know if the car is used on short runs, and if it does use coolant.
Kind regards,
Gareth.
p.s. I guess it would not have been possible to have amended your thread heading once entered, otherwise the wording would not have been in capitals.