Racing Oil

Motor OIL 10-30 10-40 5-30 VS racing oil vs sinthetic vs semi sinth. what oil for what car?? mines +100k miles

what are the differences? i noticed my car smoking white last time, and i do not have money to fix it for now, so what is the best motor oil i should go with? its got around maybe 110k 115k miles japanese import 4 poper doh cam and runs hot because of weather here as well as driving, right on overheat range so whats best for my car?

Continue to use manufacturers recommendation for oil type, and change it regularly. I highly recommend synthetic oil, as it lubricates better and can extend oil change intervals. Personally, I have four cars in the family and I use Mobil 1 5w-30 changed at 10k miles in all four.

White smoke, on the other hand, is a big concern! Make sure your car is not low on coolant as white smoke indicates steam, which results when the engine is taking in water; probably from the cooling system (leaky head gasket or cracked cylinder head.....). Make sure the radiator pressure cap and the thermostat are correct ratings and working properly. If it's been a while, have the cooling system flushed and tested for leaks. Have the cap and thermostat tested too. You should not be running that hot on a steady basis. Overheating will cause the head to warp and crack.....
Good luck.

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