Based on my experience with Honda products. the engines are just getting broken in at 125,00 miles--without any of the miracle additives.MDXLuvr said:I was wondering the same. Slick 50 or Prolong or Z max? My logic is this- theoretically, these teflon(?) like additives reduce wear and tear on initial startup. even a good synthetic cannot claim that. I was thinking it would help if i kept the 'X for 125k+ miles.
I would definetly not use any additives unless the service manager said it was ok. This is a high tech engine not the basic cylinder and piston engine of the 70's and 80's. DON'T JUMP TO ADD.ace3 said:I just got a new MDx yesterday and i was wonderong if Prolong and other additives to the car actully work? I am quite skeptical about the the Prolong and that stuzz Z max
The trailer kit will only cool the transmission fluid and the power steering fluid, which isn't a bad idea. I'm sure it will extend the transmission life and the power sterring rack. This will not keep the engine itself cooler. In the older cars we used to replace the thermostate to reduce the running temperature. I'm not sure how running at a cooler temperature will affect the running of the engine. You have to remember that the computer monitors all running features of the engine. It may cause the engine not to run properly because the computer will try yo correct the lower engine temperature. I would personally make sure the antifreeze fluid has the proper level and be sure to keep it clear with regular maintenance and replacement.srpbep said:Being aluminum everything, I suspect the single most deadly item would be to let it overheat [I am NOT a mechanic, so please don't hesitate to correct].
I would invest my maintenance money in the cooling system. I am wondering whether to add the trailer kit coolers even though I have no plans to add a hitch!!
In actuality the engine coolant temp is affected to a degree (no pun intended) by the transmission temperature since it also uses the tranny cooler at the bottom the radiator to draw away heat.paul123 said:
This will not keep the engine itself cooler.
To my knowledge of transmission cooler, the transmission fluid runs thru the cooler, not antifreeze. I do understand there is a small trans cooler built into the radiator, that only cools the trans fluid. I guess you are referring to the point if the trans cooler in the radiator is cooler than it wouldn't heat the antifreeze up to a higher level. Overall I don't believe this will make the engine run cooler. My knowlege the only way to keep engine temperature down would be the replacement of thermostate to a lower running temperature or replacing the radiator with a high performance increased core radiator which would have more cooling vents and larger ports internally. But like I said if you reduce temp to much it may affect the computer which in turn will affect the way the engine runs. I wonder if they will make a performance chip which would allow the engine to run at a lower temperature.DaleB said:
In actuality the engine coolant temp is affected to a degree (no pun intended) by the transmission temperature since it also uses the tranny cooler at the bottom the radiator to draw away heat.
The optional Acura transmisson cooler is in series with the radiator transmisson cooler it does not bypass it. But if the transmission temp. is not well controlled, it could also raise the engine temperature to a point.
To me this is a good reason to have the transmission flushed every 30K to keep all these passages as clean as possible, as well as flushing the engine coolant system. It can't hurt to flush the power steering fluid too, and why not the unrelated but important brake fluid!
Make a flushing service appointment!!
The service manager at the dealer where I bought my X advised me to wait until 15000 miles before using synthetic oil. Has anyone else been given this advice?DaleB said:..... just use a proven synetic oil like Mobil 1. But wait until you get at least 3 or 4 thousand miles.....
There are high performance vehicles that come from the factory with Mobil 1 in the crankcase. I am sure the MDX engine is broken in sufficiently by 3 or 4K miles to use synthetic. It will be by the time I have that much mileage on it!:2:BaldEagle said:
The service manager at the dealer where I bought my X advised me to wait until 15000 miles before using synthetic oil. Has anyone else been given this advice?
I guess you are referring to the point if the trans cooler in the radiator is cooler than it wouldn't heat the antifreeze up to a higher level. Overall I don't believe this will make the engine run cooler.
I see your point I actually stated it backwards, meaning if tranny cooler runs hotter it can heat the radiator up hotter in turn raising the antifreeze temperature. Like you said the tranny cooler should be in a different location not inside the radiator. I personally think the MDX runs pretty cool and would go for any mod's to reduce temperature. I would be to nervious of affecting the computer. The fans on the MDX do well in traffic and high temp days in keeping the engine cool. The american car companies have alot to learn from the foreign cars on how to keep the temps down. In my opinion, the american cars could keep the temps down but they don't want to because they want you to purchase a new car every 2 or 3 years, where foreign cars last much longer due to the cooler running engines.DaleB said:
Actually, just the opposite. Remember the transmission is using part of the radiator for cooling, if the transmission runs too hot it will also raise the overall temperature of the engine coolant as that coolant is also asorbing more transmission heat now. Probably not a lot but more heat is more heat.
That's why HD trasmission coolers can bypass the radiator which is even better.
But for the way most of us use our MDXs it's not really necessary.