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I have a 1988 1.6 litre Toyota Corolla which has travelled 252,000 kilometres. On checking the engine oil level I find there is water in the oil.

Can you please tell me the possible cause, my options, and is it worthwhile having it repaired?

Brian

From the "Ask Jack" archives - 23 June 2010

Oh dear, a real dilemma if you have to pay retail rates to have the problem fixed on a car of this age and mileage.

Water in the oil normally points to a fault with the head gasket or the cylinder head itself (I am assuming the water level in the radiator has dropped as well).

The problem is once the head is removed, the job costs normally expand rapidly as other issues are quickly discovered that will need repairing.

If there is a crack in the cylinder head for example it will need to be stripped and sent for repair so the rebuild would include a valve grind etc. Items such as the radiator and the cooling system in general also come under close scrutiny to ensure the completed job will carry some guarantee.

This can created other problems as once the head is overhauled it can place pressure on the rest of the engine and it is not uncommon for engines to use excessive amounts of oil after repairs like this at such high km’s.

The other option is to fit a second hand engine but these costs can also escalate out of control at times. Most garages want to once again ensure the cooling system is in good condition to offer even the smallest of warranties on a second hand engine.

Whichever way you go the costs could easily overtake the cars value.

You need to find a trust worthy mechanic who will look at the problem and provide an up-front and honest assessment of the work required and the other potential costs. The general condition of the car also needs to be taken into account.

Once you have that information you will be in a better position to decide what to do.

Selling the car (with a known problem) or even scrapping it are options you may have to consider.