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Synthetic base oils have a number of advantages over mineral base oils. The uniformity of the synthetic oil molecules improves the thermal stability and reduces oxidation of the oil. Controlled molecular structure also results in lower volatility and a more stable vicosity over the life of the oil.Did you find this important?
Most diesel engine oils carry a higher specification rating than petrol engine oils and vehicle manufacturers often specify a diesel engine oil be used in a petrol motor. This does not work in the reverse, petrol only engine oils cannot be used in diesels. Some engine oils carry both petrol and diesel specifications.Did you find this important?
Tap water quality can vary widley depending on your location. It is best to use deminalised or deionised water, as tap water contains chemicals and minerals which can effect the performance of the coolant.Did you find this important?
No, oil changes should still occur at the intervals set by the vehicle manufacturer.Did you find this important?
Yes it is suitable but often more expensive than demineralised or deionised water.Did you find this important?