I went to the dealer to buy my 2014 CVT Corolla new spark plugs. Ask them for the Denso SC20HR11, then they asked me for my chassi number and gave me the SC16HR11. I kinda argue with the part guy that they are not what the owner manual tells what I should use... now I know... thanks!
Thank you so much @toyota maintenance I was so stumped when i ordered denso spark plugs from the dealership site and seen the number didnt match the originals. The guy i called didnt even see the part number change in the system when he searched my car model.
I was confused by the two different numbers so thank you very much! I got 203,000 miles out of my spark plugs and still could’ve kept on going, but I just figured might as well replace them. Why not… :)
I have a 2005 Toyota Corolla. I changed the plugs from the originals to NGKs around 2015, with 90k miles on them. I hope they last a good while. Next round I'll try the Densos.
Nice video, great channel. I'm toyota owner since 2012 and I think will never leave this brand. Now I have a Rav4 2014 with 112.000 kms.(Brazil 2.0 4wd). Came here after looking for the correct model of spark plugs to change. I don't know if I get the SC20 (original) or the newer SC16.
I bought a 1999 Toyota Corolla LE and it had 124,000 miles on it I change the spark plugs the ones that were in there where NGK dual tip iridium I didn't look at the numbers
I do replace them every 50K just because the car runs better (yes with proof). you can also let the engine oil run for 20K just because the manufacturer say so. It's relatively easy for me to change these so :) Also there are two Spark Plugs for Gen 3 Prius. Over the years Toyota added NGK to the manual. The back on the Spark plugs is from the ignition coil rubber btw. I have done this 4 times already and it looks the same. Currently using NGK ILKAR711B, so far it's the best spark plugs I've had in the 2015 Prius (218K miles)
Rock auto lists a LKAR7BIX11S.... Is this the replacement that you used? I have 198k on my 2014 originals and am getting an occasional stumble on startup. It's due but I don't want to put something in that I'll regret.
@@1southsoon So I've never used LKAR7BIX11S, but I would go with either of the spark plugs recommended by the manufacturer. I originally used DENSO but tried the NGK to see how it performs The objective is not about how long they last but how much does the resistance changes within them. The older they get, the higher the resistance, thus putting more load on the coils. ILKAR7B11 is what I use right now and I'm extremely happy with NGK, hope this helps :)
When you are opening a car up that much, why not change the PCV valve? Simple, cheap, could potentially protect the engine. A couple of different generations of Prius have it under the intake manifold (i.e. the 2ZR-FXE). That's a good opportunity to clean the MAS, change the air filter, clean the throttle body, change the gaskets on the air intake and throttle too.
I dont understand why there is a discrepancy in spark plugs maintenace schedule between Europe and USA?!? Same spark plugs should be change at max 90000km ( abt 55000 miles) as per the EU Toyota manual and 115000 miles in USA ! What a difference! I did change mine at 85000km with the new 16’ . I find them much better in car’s performance
@@olteanalinleon there is no difference. The octane rating in Europe is simplye the RON number, while in US thr octane is the average of RON and MON figures.
I just wanted to know why they changed the heat range is it to make them burn cleaner at the detriment to the longevity of the engine its out of warranty so they dont care if your car cooks at 200,000 kms i hope Toyota would not do that i just want the explanation
It will not affect engine life. The difference in heat range, 20-16 is not much. Using a much hotter plug can result in metal pititing & damage. If plugs were showing this damage, it would be well documented by now.
I got the sc16hr11 from the dealer. installed them after removing the original sc20hr11 and to my surprise instead of getting better acceleration which my Prius did have now I got stock with some spark plugs that make my Prius run like a hybrid even in sport mode I am thinking of putting the old ones back even though they may be worn they worked a whole lot better!!! I could burn rubber before now barely! if I could go back in time I would not change them and keep my money which the dealer won't give back on spark plugs! as far as mileage they might work because they make the car accelerate slower. but in case of avoiding an accident I rather have the acceleration.
You should not be able to tell the difference without advanced monitoring equipment. The only difference is the 16 is a hotter heat range, the plug runs hotter.. It’s possible you got a single bad plug, (I once had this happen with new plugs on a Sienna), or perhaps one of your coils is gone bad. Remove them all, & see if one shows signs of misfire, or fouling. If so replace just that plug.
From Denso; "Due to OE requirements DENSO has to change the heat range from 20 to 16. These connected applications are mainly Toyota engines. The OE car manufacturer has already switched to SC16HR11 for newly manufactured vehicles. The Aftermarket will follow this consequently. The level of heat range is connected to low or high speed driving. The initial choice for the right heat range is a result of expectations towards average use of the engine. After a few years of experience with this engine, the manufacturer decided to lower the heat range."
the denso sc16hr11 is the next hotter spark plug. 16 is the heat range VS. 20 is a bit cooler. from what i have seen they use the 20 in cars with turbo or cars with more performance
Even the daily driver 2010 Corolla calls for the same plug, in 20 range. It could be that the Prius, running on battery part time required a “hotter” plug to prevent fouling.
@@edwardhill6945 When was the last time you looked up your car's spark plugs at the genuine Toyota parts website? The manual for my 2013 Corolla with the 1.8L engine, which should be the same as yours, calls for the sc20hr11, but the website now shows that the recommended spark plugs have been superseded with these exact sc16hr11 plugs. Since their information is 9 years more up-to-date and based on more recent data I'll go by the current recommendations.
@@skyeevl7656 I do it every 50-60K miles, but I believe the factory recommended interval from the spark plug manufacturer is 75-80k. Whenever I do it I also check the rubber boots on the coils too. If they are hard they can become brittle and crack, causing the spark to arc and misfire. My car has only 75k, but when I changed them, the boots looked OK, so I'll probably have to replace them all when I do my next plug change.
when i changed my plugs i used the E3 plugs (bigger spark) on my 2016 tacoma sr. would you. change the battery when you have to or because its 5 years old. ? write back please.
My 2017 Tacoma says 60k miles and change the spark plugs. In the manual a footnote says it is because of pollution regulations. My wife has a 2015 Camry with the same engine and can go twice as long before changing them. Any comments?
Denso has a new improved Iridium plug call the TT (Twin Tip) that was designed with a iridium tip on the electrode. I just replaced the original spark plugs on my daughter's 2015 2.5 Camry with the TT Iridiums. None of the retailer had them available, so I purchased them directly from Denso.
Hey Peter,,,,,,,,, I've "heard" that in that year : 2010 Toyota had a contract with PULSTAR PLUGS and Toyota began to use "PULSTAR PLUGS" instead of those normal Nippon-Denso's...........
In most cases yes, they are the same plug, the “20” is slightly “colder”. It may be that the Prius when running in battery, & in cases where people drive very little, the gas engine doesn’t get used much & plugs were fouling. If your car ran fine with the 20’s, & the plugs don’t look fouled, you can continue with them.
If you get those plugs at the dealer,and even though it says Denso on it,how do you know those plugs are original/OEM,if you are not an auto technician,like you ? The untrained eyes tend to believe what sale person told....
