Synthetic oil?

supergoose

Member
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07' Mazdaspeed 3 Sport
Is anyone running synthetic oil and if so what grade? Also, has anyone heard of Rotella T synthetic oil? My dad runs it in his bike and swears by it that is the best.
 
Well in my speed3 I put in 5w30 in my bike I havent switched to synth yet only have 1k on it. But i have heard of rotella, i might try that.
 
I run 5w30 mobil1 for about 3 only changes now.I also changed to mobil1 trans fluid.Royal purple is suppose to be very good also and some wallmarts sell it.
 
Royal Purple 5w30, car has 19500 miles on it and no smoking or oil consumption. It costs me $7.75 qt. here in san diego but I think it is worth it. The price makes a lot of people go for mobil1.
 
Royal Purple 5w30, car has 19500 miles on it and no smoking or oil consumption. It costs me $7.75 qt. here in san diego but I think it is worth it. The price makes a lot of people go for mobil1.

Should be $5 a quart unless youre using the racing oil.
 
If you believe half the stuff you read on the net...

Synthetic Oil will either cause your engine to throw a piston into low earth orbit, or will give you ten MPG better, add 50whp, and make your engine cleaner.

I honestly doubt anything bad will happen on synthetic oil with these cars. But, we'll have to wait and see.
 
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