Which engine oil to use for toyota supra turbo 1988 193k miles?

Took me a min to answer because I had to go look at the Royal Purple synthetic blend bottle I had to make sure I answered your inquiry right. 10W30 viscosity. The prob with full synth is that most cars back then didn't start out with it. Since yours is a high mileage car (my '91 has 88k) you never know what the previous owners were using, and you really want to stick to whatever the car is used to.

I mean it's not dyer, you can switch but it's best to stick to one type. RP has worked great for me since five years ago.
 
you should go fully synthetic. mobile 1, Enos oil, Amsoil. i would use the 1030 weight. and use a engine treatment if u want to perserve ur engine.
 
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