Hence why earlier I mentioned making sure your serpentine belt fits into your whole setup. Live by this wisdom and don’t make mistakes!Ī common issue is not the belt itself, but rather the pulley and tensioner. You think that everything’s alright and then BAM!, the rib surface gets dry and that’s when the noise problems begin.Īs your belt’s already tacky and contaminated, you either have to live with this noise or change the belt again.ĭayco themselves warn of this on their official site, and I’ve seen their marketing manager spread the word on community forums too. What happens is that initially, the dressing dampens any belt noise. If you use belt dressing on them, the rubber compound you have there will swell in time. Modern serpentine belts are made of EPDM material. This one’s pretty important and can potentially ruin your newly bought belt. Let’s look at a few other important factors to keep in mind.Ĭheck Dayco’s PolyRib belt An important note: Belt dressing and EPDM serpentine belts On some Ford models, for example, I’ve seen people complaining that the Dayco belt was too short. This is what really matters, as a misaligned fit is what leads to unwanted noise and ‘chirps’ down the road. So right now, both Dayco and Gates go for EPDM belts that are more durable and significantly better in terms of quiet operation.Īs I mentioned, Gates is a better fit for most US vehicles. At one point, they switched to EPDM rubber compounds too. The thing is, Dayco had those neoprene belts that were more susceptible to ozone degradation.
Gates is vastly superior in terms of timing belt kits and radiator coolant hoses. To some extent, I agree with people in this thread, though. On the other hand, Dayco belts are the OE standard for a lot of Toyota cars.īoth brands focus on several product lines and deliver relatively similar performance in all of them: On most American vehicles, Gates should be your primary choice in terms of general fit and compatibility. There’s a very specific reason why Gates’ belts like like this one are more popular.Īfter all, Gates is the OE supplier to a lot of manufacturers such as AC Delco or NAPA.
Which one would be a better and more reliable choice?Īlright, let’s get one thing clear first.
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