I inadvertently posted this earlier in the 2nd gen classified sec. I know, I know, noob mistake and so on..flaming, whatever. I was viewing the section and wasn't paying attention. ANYWAY....

I seached the forum and found no thread addressing this.

Does anyone know if pre-mixing over time can cause the fuel filter to clog or become dirty and faster than normal. I drive an 88 GXL and pre-mix about 1oz per gallon. Is this ratio too much or not enough?

Also, I know interstate driving is supposed to be easiest on a car, but what about drivng a rotary-powerd car on a long trip (about 7 hours) with the RPM at an almost constant 3,000 RPM doing about 65-70 mph? Does this do any harm or wear the engine out faster. In addition, what is the normal oil pressure at, lets say, 3,000 RPM. I want to make sure my oil press is'nt too high or that the sensor is bad.

I would have posted these questions in a separate thread, but I try not take up too much space on the forum and I know the mods frown upon those who begin too many threads.

All insights and suggestions are appreciated.

 

Pre-mixing should have no effect on your fuel filter if you're using any kind of decent product. The purpose of the fuel filter is to prevent any kind of insoluble particles that would cause damage from entering the combustion chamber or clogging injectors. Since the premix you're putting in is brand new oil, if it had any kind of damaging bits already in it, it wouldn't really serve its purpose as oil very well.

0.75 oz/gal (1:170) for light driving
1 oz oz/gal (1:128) for average driving
1.2-1.3 oz/gal (~1:100) for spirited driving
1.7 oz/gal (1:75) for racing

As with any engine, but especially rotaries, extended periods of low rpm driving is unhealthy for the engine. It's not explicitly damaging (like very long periods of idle), but can lead to deposits on your rotors that can give you a nasty surprise later when you do decide to step on it. These engines are made to be revved to stay clean. If you're faced with a long distance trip, drop down a gear or two every hour and spend some time around 5k-6k, or better yet, just take an exit ramp, go through the intersection, and take the acceleration ramp at wide open throttle to blow things out. The driver isn't the only one that needs to take a break and stretch every now and then on long trips.

The stock oil gauge isn't very precise and will change to a degree depending on your oil grade, but you should read about 20-30 lbs at idle, and 45-60 on the highway.

Again, interstate driving is easy on the engine, which is why it's actually a bad thing. A car is healthiest when maintained and put through its paces, not spending long periods of time at the same speed.