gayanath

The very first thing you have to do is check 12V battery. I saw few Vezel's and GP5's giving different kinds of errors due to 12v battery issues. You may go forward with other checks only if 12V battery is in good condition.

Vitz Engine and Transmission is different from the Yaris. KSP130 having 1000 cc engine + CVT Vitz Japanese manual: https://toyota.jp/pages/contents/vitz/003_p_017/pdf/spec/vitz_201605.pdf You could download both and compare. Use Google translator to understand any different items. .

They marketing this as 6 seater. Is it ok to take 2 passengers on front seat (drive + 2 passengers) in a car in sri lanka?

India is doing some thing. Just for info. https://crickettimes.com/2020/02/road-safety-world-series-2020-teams-squads-schedule-and-venue/ Quote: “There has been a lot of excitement towards this tournament. People were eagerly waiting for the schedule and the tickets. I am extremely glad for the fans, and I am sure they will come in large numbers to cheer for the legends and also support this important cause of creating awareness towards road safety in the country,” stated the RTO Chief of Thane, Ravi Gaekwad, according to MyKhel. “Road safety is a serious concern. One person dies every 4 minutes in India and we all should join hands to make our roads safe and save precious human lives,” added the senior member of the Road Safety Cell of Maharashtra and Chairman of the Trust, Shant Bharat Surakshit Bharat. .......Quote:

Because of 95% wheel alignment machine operators in SL are not educated well regarding the subject and having no tacit knowledge and common scenes required to do it, better to use with original settings if you have no issue with uneven tire wear or any other issue.

Hydrogen vehicles also need batteries. Toyota Mirai is having 1.6 kWh battery Toyota Prius 3rd Gen is having 1.3 kWh battery Toyota Prius C/ Aqua is having 0.9 kWh battery

Agreed.... @iRage, Why don't we do something.....? Five good people is enough to start something and keep the warm up to the results. People will join for clear cut good things (I mean if we try to promote a politician, people will support as well as oppose. But for road accidents related, no body will be there to oppose).

We all are the people should lobby for it as citizens.... 3,554 people died due to accidents in 2018. It's almost 10 per day and the trend is incremental.

Agreed with you. Is millage tampering illegal in Sri Lanka? I think its not yet made illegal. People will then try to tamper millage every year before the test. So, with above suggestion and same time, millage tampering should be gazetted as a critical punishable offence with a huge fine.

And, after all.... People would say, Sri Lankan cars wear down fast in such a low millage due to bad environmental conditions, quality of fuel, ets. Therefore, please do frequent oil changes, engine tune ups, etc.........?? Its hard to find a car in SL having 200,000+ km on ODO but engines overhauled. ????

My relation visited us in mid 2019 by newly bought Toyota Vitz 2016 (as an unregistered car from a Big car seller a week before) with the millage 27,XXX km. By just looking tires and the condition of the car, I had a doubt so I checked a bit. I could find a Japanese maintenance bill at the millage of 44,XXX km which kept inside the owners and maintenance manual (may be the car seller couldn't check the book). I took photos of that one and chassis number and other details. Then searched online after my relation has gone. By referring around hundreds of vitz auction records I could find the auction sheet of the same car with the millage of 51,XXX km. However the condition of the car is not bad. It was 3.5 grade with interior B. No pint of breaking the heart of my relation so, kept silent. ??. ??

Agreed.... Its clear. No argument. Car manufacturers also recommending thicker oils (for same engine they are recommending low viscosity oils) for extreme cases as we discussed previously. But same time they are recommending same thinner oils for high temperature areas for normal operations. Are you agree for this simple formula? Thicker the oil ----------> lower the risk for engine failure at higher operating temperatures (reduce the cost of failure) Thicker the oil ----------> lower the fuel economy (or higher the fuel cost) In the scenes of overall economy, what is the best? If the user need to use the vehicle for extreme requirements, definitely he has to ignore the fuel cost because of comparatively higher risk of failure. But our ordinary users who use the car for daily city travelling and occasionally travels in expressway for 20 to 50 minutes, should we ignore the cost for minor risk of failure? Do higher ambient temperature a real risk than cost?

Actually its a continuation of previous discussions which we had regarding engine temperature, cooling effect at higher speeds, oil viscosity with oil temperature, etc. Therefore, 2+2=4 ---------------> (___at previous discussions______) ----------------> Neel Armstrong was the first human on moon Ha....ha.... Just kidding.....

Sorry for late reply..... Let me elaborate further..... A) Higher the speed ---------> Higher the engine RPM B.) Higher the engine RPM -----------> higher fuel burn in unit time ---------> More heat generated C) Higher the speed ----------> Higher the air drag --------------> higher the engine load ----------> Higher fuel burn at unit time ------> More heat generated D) Higher the speed -----------> Higher the air flow --------------> higher the temperature difference of radiator surface -------------> Good cooling Lets assume fan is working in same speed at every time, What will happen, Case 1. If B and C > D, engine temperature goes up with higher speeds Case 2 - if B and C < D, engine temperature going down with the higher speed. But in practical scenario, Case 1 is happening. Which means engine temperature going up with high speeds. Now lets assume, fan is not working, Then, At huge traffic or very slow speeds, ----- > Heat dissipation from radiator is less (no fan, no air flow due to speed) ------> high chance for engine boiling At moderate speeds --------> Heat dissipation is good due to high airflow due to speed (even no fan) ---------> less chance for engine boiling. At extremely high speeds -------------> Heat dissipation is good due to high airflow due to speed (even no fan), but more heat generating ----------> high chance for boiling. So, thick oil is good for long duration extreme speeds, but others having no big effect.

Manual says (not passo, but other Toyota) keep the Toyota Badge side of the key touching with the start button and then start it.

Dude...... Vitz made in Japan with Japanese quality standards. Not in India or China.... ??? ?

? its not a silly question ..... That is how the matter is formulated. Please go through below two tables. The difference is not huge. That's why you could use all three (20, 30 or 40) for same engine without any issue. Manufactures recommendations are not only based on the safety of the engine components. They optimized it with reducing friction losses (ultimately thermal efficiency), replacing intervals of lubrication, etc. In that overall aspects, they recommend most suitable one. I always telling this...... If some one need to maintain the engine perfectly, he should replace engine oil every 1,000 km (or lets say 500 km ?). Because, oil deterioration starts from the very first day you started using it. But we are not doing it. Why... ?? its not cost effective. This phenomena applies everywhere. Below two table shows the relationship with SAE number vs Viscosity.

This is true for very old cars which radiator fan directly coupled to engine. Idling means fan rpm also less + the factors you mentioned. But for latest cars, din't the fan managed the required airflow depending on the cooling load needed? We never heard an engine which is not boiling in high speeds boiling in idling, but there are incidents which engines are not boiling in traffic (or idling) boiling in high speeds.

Definitely... Actually I didn't take all components together, because its difficult explain the effect of one variable, taking more variables at same time. (this is just like partial derivatives ..... ?) Regarding on traffic, Partially agreed but not fully... Because, even you are sitting on the traffic, you are on idle so less heat generation, and same time cooling system is working with his well bearable capacity. So, it shouldn't be big effect (but agreed that, minor effect will be there). For continuous high revolution, then its yes. Even-though more air is going through the radiator as well as through engine bay, the heat generation is high and cooling system also works on its max limit. So obviously engine is running hotter than average. Correct me if I am wrong... Finally,...... My point is.... For a vehicle which 0W20 is recommended by the manufacture, 1. Extreme end users - Thicker oil is the best for extreme end users (high speed or high rpm continuous long duration). 2. For average users - yes. the thicker oil is more safe (but this not means 0W20 is not suitable). In the sense of cost effectiveness, we cannot say 5W30 or 10W30 is more suitable than 0W20 for SL (using available technical data).

No, its not. That chart having nothing related to SAE 20. Its the spectrum of SAE 20W (which is winter part only). (btw, sorry I couldn't watch youtube videos please) Lets say few seconds but this is the point where ambient temperature matters for the most. Lesser temperature or sub 0 countries starts it from lesser or sub 0 so they needs multi-grade but we do not need (I mean theoretically we do not need multi-grade, but practically no harm using multi-grade with some additional benefits) Assume any temperature you wish and put it to the chart and see. No. that's why average is not taken as (30 + 90)/2 = 60. And this is not idle stops or hybrids. I mean 10 min drive and park for 1 hr. Again 25 min drive and park for 30 min or 1.5 hrs, and more time in engine idling, like that. So its the average effect on engine in life cycle for vehicles not using continuous high speed driving with heavy loads. Values are just indicatives only for understanding. So even you may apply as any value combinations for continuous running vs intermittent running. Cool............

This chart make more sense in technically. Lets assume, in SL context, Our engines runs 30 C to 90 C, then 0W20 - 50 cSt to 9 cSt (lets say by graph) 5W30 - 90 cSt to 14 cSt (lets say by graph) 0W40 - 110 cSt to 16 cSt (lets say by graph) So, there is a point that, continuous running hot engines will be bit benefited by XXW40 while engines with start stop running with less average temperature (lets say average temperature 75 C because of stops and running) will be benefited by XXW20. (The average effect on the engine is more or less same with hot engine using XXW40)

OW20 is not included here. Its only 20W.

What happend was, Before introducing 0W20, TL oil delivery system has only 10W30 (or 5W30 I cant remember exactly). So they marketed it for all engines saying 0W20 is not good for SL climates. (Caned 0W20 provided upon customer request) Now they have 0W20 pipe lines I believe. So now marketing for 0W20 saying its the best suitable. Ha... ha.... Finally, its all for profit & profit & profit. Nothing technical......

At which intervals you replaced oil (based on your on-board system)? Four oil changes for 19,000 km?

International version of maintenance manual says 0W-20, so why its not suitable for SL. Are they not selling this vehicle for tropical countries?