Quote:
Originally Posted by cmanser
How would the castrol work mixed say with 3 1/2 qts of M1 5W-20 and the 1 qt of Castrol 0W30. Gives you the think weight of the M1 but the long life and addatives of the Castrol - best of both worlds??? or too Frankenstein???
Commnets?
|
I would say stay away from the 5W20 all together. The Castrol 0W30 Germany made Syntec is one of the best overall oils you can get and put in your Si. I ran the Mobile one 5W30 prior to using the 0W30 syntec and the car ran a lot smoother with the Syntec than the Mobil One.
I am running it in my Audi TT and in my Mustang GT and both cars run excellent on this oil and the gas mileage has actually improved some.
Either way I would not recommend mixing oils and don't waste your money on additives like Slick 50 or Prolong or even Lucas crap.
All of todays oils have a specific additive package which you compromise if you add anything else into the mix.