Since January 2013, zinc content was reduced in order to meet API standards and government requirements with respect to prolonging catalytic converter lifespans, and this, at the detriment to the life of our motors. SN oils don’t meet the zinc (ZDDP) content needs. If you use oil with the API classification “SN” (even if the manufacturer attests that it meets the old SJ and SL standards, you must add a zinc addictive (ZDDP) with each oil change. All is dependent in the frequency the motor will be opened up and cleaned. The varnish cause my synthetic oils would then be cleaned. In cases where the motor is being races, and therefore rebuilt every month or less. There is one notable exception for using a synthetic oil in a rotary. The advantages are obvious, as your motor will start better, run better and smoother. For example, Brad Penn oil (mineral with synthetic additives) It is less expensive and has all the characteristics needed for rotary engines. It is necessary to do your oil changes at the same interval, between 3000kms to 4000kms maximum. ![]() There is no advantage in using a more expensive oil that has no advantages. Furthermore, when synthetic oils reach high temperatures, they varnish and create deposits in the motor, damaging the bushings and internal rubber joints. The additives they contain are simply not enough. OMP or not, premix or not, they don’t have the ZDDP (Zinc Dialkyde) necessary for rotary engines. Synthetic oils are for suitable for rotaries. We see an increase in vacuum and sealing of the motor overall, and an increased lifespan.Īlways use non synthetic mineral oil for rotaries (note, it is really only the additives that are synthetic) This is ideal for our rotaries as it increases the fit between segments (Apex) and reduces wear. Anti-wear and anti-friction are two very different things!įor oil changes, use only API SJ or SL at a minimum. 075ppm) and is replaced with anti-friction. SN means reduced anti-wear additive (ZDDP <. WE MUST NOT PUT THESE OILS IN OUR ROTARY ENGINES. Under new regulations as of January 2013, Mobile 1, Castrol Syntec and Shell Rottella all now have a API SN designation. For more aggressive use and/or racing, opt for 20W50. If you fill up halfway, cut the oil number by half.įor motor oils, we need a minimum viscosity of 10W30 (never use 5Wxx). We recommend Klotz as it is better and cheaper than Motul, and yields better results overall.įor the premix, you must add 6 to 8oz of oil per full tank of gaz. At Derwin Performance, we use Klotz JASO FC. The denominations JASO “FC” or “FD”, FD being the best for 2-stroke high temperature and high-performance. - HOW TO DOUBLE THE LIFE OF YOUR ROTARY ENGINE (RX-8)įor our motors, two stroke engine oil (injection type sohn OMP adapter or premix) should be used.- TUTORIAL FOR CHECKING CODES CODES (FC3S).- WHY OUR ROTARIES BLOW UP (AND HOW TO SOLVE THIS PROBLEM).- WHAT OIL TO USE IN OUR ROTARY ENGINES.- RX7 FD 1994 silver 20B single turbo 445whp.- RX7 FD 1993 montego blue single turbo 426whp.- RX7 FD 1992 JDM black twin turbo 255whp.- RX7 FD 1993 Silver single turbo 450whp.- RX7 FD 1993 JDM camo twin turbo 353whp.- RX7 FC TII 1988 yellow single turbo 240whp.- RX8 SE 2004 blue single turbo 333whp.- RX7 FD 1993 black 20B single turbo 675whp.- RX8 SE 2004 red 13B-REW single turbo.- RX7 FC 1990 red single turbo (DRIFT CAR).- RX7 FC 1986 white single turbo 361whp (DRIFT CAR). ![]()
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