Salt water protection

Diesel then take it for a fast drive on a dusty road , whats wet with diesel cant rust mate . the paint manufactures hate me for this .

yeah and use lots of fish oil coz it smells great and you will never have to give anyone a lift to the shops!!!!!
fish oil is good if you got rust starting it will slow it down and the smell will go away, one day. like the diesel idea to.

Dont drive in salt water.

Fish oil if good quality really sticks & stops rust dead. The smell goes away after a while too & its fairly cheap to do.

Best advice is don't go in salt water. Do you really intend to go in the water or just along an ocean beach? Some places (eg Noosa north and Rainbow beach) have purpose built car washes with which you can spray under and over your car with a protective coating. If not available where you're going, a good strong hose with fresh water is the best basic treatment. Fish oil and diesel are both of some use but a thorough flush with LOTS of fresh water is essential and DON'T drive in the water unless unavoidable. Keep in mind that water flowing down the beach towards the sea is usually fresh. If it's going towards the beach it'll be salty.

if you are want to spent some money to protect your car i recomend you 1 get you car sprayed with rust proof a black spray for under the car or 2 get a electric rust device it is but under the bonett ARB or any 4be shop

The car wash at Rainbow Beach (Fraser) uses a mix of water and kerosene through a pressure washer. The kero is oily, and does lots to both clean and protect the underbody after contact with salt....leaving a protective oily film behind.

Lots of people also use kero to wash and polish a car - especially the councours d'elegance guys at car shows....

Try not to get oil/diesel on rubber components - it will soften them and accelerate deterioration. Sand will stick to fishoil/lanolin/tectly and its VERY hard to remove when you want to sell the car. I wouldnt use any of these on the underbody/enginebay but rather in internal cavities. It wont stick permamently to diesel but needs to be applied before every trip if you go this way. As others have said, avoid salt water if you can. I know its not always possible, especialy the fine spray from wet sand.

when I get salt water under my car, I just come home after a few days, and park it on the front lawn, with the sprinkler going under it till the grass looks nice and green, or till there is run off onto the road!

Andrew