Comments by "rondhole" (@rondhole) on "The Car Care Nut" channel.

@MalcolmWalker NO, it is cosmetic, purely cosmetic. The slot may be more beneficial in track when we really push it to the limit non stop. On the road, you hard braking may be once or twice every 30 minutes. It never gets really overheat either. All German cars use drilled rotors so you will change it periodically, because those holes will crack for sure.
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@MalcolmWalker venting gas in pads is a Hoax, there is no gas at all, or almost no gas from pads. There is glass transition on the pads as it heat up and the coefficient of friction on each compounds are different. Some is better when it is cold, and some when it is hot. Again, the drilled holes are cosmetic alone, the slots and any patterns indeed for shaving and cleaning the pads better. Nothing else for such a steel rotor. It is purely by intension of most German cars that you replace the rotors periodically because of the failure points on the drilled holes.
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@MalcolmWalker Benz always recommend change rotors with the pads. For a clear reason, it gets thinner and the crack from the drilled holes
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@volvo09 thanks for the info. Some materials in the pads may get really hot and evaporate. But there is no gas formation and trapped somewhere. Just material evaporate from the heat. The cause of the brake fade after long downhill is rotor and pads overheating. The friction materials change the coefficient of friction above certain temperature. That's why racer use more high temp. Pads, but it does not work well when it is cold, it does not fit street car. The drilled rotors will not reduce anything in your case. There is no brake fade on your first hard brake, only after you have several hard braking. If you have brake fade from 1st brake, you need a better pads not a new rotor
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AMSOIL is an MLM type of business. It is a good product but not cost-effective at all. Amsoil could be 5% better than Pennzoil Platinum, Mobil1, or Castrol Edge but costs 2x and does not make sense.
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@drunksquirrel2051 is ok 1 year
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I dissagree with highway trips. That's actually the best way for breaking in at about 70mph for 8 hours. It is a constant low rpm about 2k rpm or less, low load, and smooth drive. City drive is the worst and fast acceleration. 10000 miles highway is better than 1000 city drive
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@smh9902 no, it is not. We hVe 0w-8 and it will be global at some point. There is no significant engine wear or oil consumption of using 0w-20. Most VW wifh 5w-30 still consume way more oil than japanese cars. It is about additives packs and engine quality. Funny enough, newer 1.0 TSI with 0w-20 508/509 shows lower wear and lower oil consumption.
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@smh9902 Look there are some Toyota with more than a million Miles and still drive fine with almost no oil consumption. 5w-30 is for the past primitive poor people who cannot afford full synthetic oil in 3rd world country or manufacturer who has no quality in making engines
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@smh9902 man, 99% Toyota owner never has issues with 0w-20, 0w-16. But many has more issues by not using them in their Toyota because of cheap 5w-30 from $20 quick lube deal with coupon and other deals. You can do whatever you thing the best for you but we, 99.999999% will follow what manufacturer recommended. 500k miles is not hard for Toyota with regular 0w-20 or 0w-16 oil change. We already have the number in many forums and TV. The 0w-8 is too new and not enough statistics yet.
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@smh9902 dude, you are in wrong place. Diesel is a dirty word for cars. It is left to truck and locomotives. You can use 30w-100 and no one cares.
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@smh9902 you can have your opinion and thought. I don't buy it. I am happy with my 0w-16 and do not miss any thicker oil. The formulation and standardisation of ILSAC6 is only better in all factors including wear, not just flow and effeciency. 5w-30 and 10w-40 will be gone for car application, although still relevant for heavy duty diesel 16 wheelers and train. Even some diesel cars use 0w-20 these days and they are great like DexosD standard.
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@smh9902 Statistically, the system with a regular filter and group III oil works well. The engines last longer than other parts of the cars. Nothing to worry about.
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@nofyfb123 absolutely. Especially with cheap oil price combined with rebates and coupon. We often gets free oil.
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@mkaestn Daimler-Benz is an old grandpa that are dying left in the dust by progresive company like Tesla, VW, or Toyota. Their top RnD that I know when I worked in Daimler are old people with conservative minded. They put their money and enegy on gimmicks like camera, touch screen, giant lcd in dash, etc. Not on electrification, reliable hybrid durable battery, or strong dependable DC motor like Tesla. Benz is 1950 glory of Giant. A dinosaur that needs to evolve to chicken and survives.
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@TheCarCareNut I think we can use any silicon grease (clear usually) including food grade silicon grease. Toyota gave me DOT 5.1 instead of DOT 3 and it cost almost the same. I believe DOT 5.1 is more durable and less sensitive to water.
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@RahzAlGhul If you have 2013 or newer, no problem with a head gasket if you maintain it well, clean EGR valve every 140k miles unless you drive in city only. Toyota revised the head gasket in 2013, and cylinder ring in 2015. Eliminate any issue that 2010-2012 Prius have(head gasket, oil consumption, etc.). The 4th gen Prius relocate the EGR after catalytic converter and reduce carbon buildup significantly.
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@gugy68 Yes, time to sell it, There is a design flaw in the head gasket in 2010-2012 Prius, They fix it after 2013 with a re-designed reinforced head gasket. Generally, avoid Prius 2010-2012, especially 2010.
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OatmealCremePie The battery in hybrid does not degrade in linear fashion. It keeps at really close to 99% for may be 10 years and suddenly have code, one of the cells failed in about 12 years in hot weather or at least 15 years in cold/mild weather. I doubt you ever own one. Yes, it may be more expensive but also higher resale value. AT the end, we never loose more money than regular ICE. Unless you plan to keep it beyond 15 years, where you will be in high risk replacing HV battery for about $3k.
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@judepeterrodriguez9507 You welcome. Always try and test them first. Based on the powertrain, Sienna and Highlander use Camry hybrid powertrain with beefier transmission for higher torque. The 2.5L engine has 40% efficiency (highest in the world) and has been several iterations, most bugs had been fixed although almost no bugs from the very beginning unlike 1.8L in Prius 3rd gen. There are several hybrids we should avoid (2010-2012 with 1.8L engines, head gasket failure that had been revised in 2013). 2nd Gen, 4th gen Prius are really solid. Historically Camry with 2.5L hybrid also have almost no issue. Toyota always stands behind their Hybrid beyond warranty period. For example, Prius 2011-2012 brake booster is replaced for free unlimited mileage until August 2021. Brake components usually is not covered beyond 3 years, but Toyota NA fixed it for free and reimbursed you if you already pay to other mechanics.
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Hyundai is going Nuts with Dual-clutch transmission, hybrid + dual-clutch, and even worse start-and-stop 48V mild hybrid. For USA, just get the Ioniq 5 EV instead of their notorious Hyundai timing bomb gasoline engines and transmission. The 5th generation HSD is very smooth and shift with a good feel like in The new Honda Civic 2022 hybrid.
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Most Dealership has disconnected chain between mechanics and service manager. The service manager gets commision for each repairs and really really bad in my past 10 years experience with any dealership. Not just Toyota
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@rryz19 No, there is no such things except for Trailer or commercial vehicle like Buses. Even in Germany, where you cannot wash you car in your parking lot or polish your headlight does not have such regulations. Germany only has regulations for max 6 y old tires for Trailer, not passenger cars. TÜV safety inspection does not fail you too just because the tires are old. But will fail you from burned light bulbs or leaking struts.
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@boobtubeakatv1296 It is true, there is no such regulation because tires are rubber and are affected by the environment much more than just age.
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@jamram9924 No, there is no requirement to fail or release the vehicle just because the tires are old. You can mention to the customer that the tires are old but garage has no right to fail your car from safety inspection just because tires are old.
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@jamram9924 That's true but if the car is always parked in the garage, 12 y old tires may be better than the one with 5y old tires but parked outside.
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@jamram9924 yes, I agree. It really depends on the owner and how the car is kept (garage or not). Tread separation sometimes is just manufacturing defects even on new tires. Rubber condition is not easy to judge just by age alone, especially Radial tires. Trailer tires are different, not radial and must be replaced after 6 years and often it is parked on the same spot.
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I think Toyota made the same mistake on 1.2Turbo on Corolla/Auris since 2013. It is a direct injection only and turbo too. TOyota starts replacing the whole engine or clean the intake valve under campaign and warranty. In short, it is still a chronic problem that any owner will have it. European market is flooded with all Turbo 1L engines including HOnda, Mazda, and Hyundai dive in together with the leader VW group, DAimler and BMW/Mini.
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