Does thicker oil cause more wear and damage to the engine? Higher viscosity oil vs lower viscosity

[PeeterPuncher]

The only reason for the thinner oil is for the minute increase in fuel the OEMs don't tell you is the increased wear and oil consumption from thinner oils. 5w30 won't hurt at all and is actually better due to better pressure properties.

[Foxinaround]

It really depends on your engine, if it was engineered around lower viscosity oils, moving to a thicker oil may damage the engine.

[HatBilly]

Use 30 in the summer, and 20 in the winter time.😊

[jr]

Be interesting to know and the manual in your car normally has a chart temperature in what oil to use for the temperature you live in

[uguroncel]

A very good tip for reducing wear is changing your oil early. Some manufacturers say you can use your oil up to 30 000 km which is crazy to me. I always change my oil at 7500 km or 1-year mark whichever comes first. I don't give a toss about extended maintenance bs. That is manufacturers' nonsense to sell more cars after the warranty expires.

[chesoriadomingo]

I have an ford crown vic, on the cap it says 5w20, mechanic put in 5w40. Should i be worried?

[tomaswall]

The zero oils are in them for more "environmental friendly" longer milage services. It's crap though because they don't care after it gone out of warranty.

[doctorwhodj]

I was deep in this topic when i owned a 2011 subaru wrx turbo, , , oil cap said 5w-30, , , manual states to use 10w-30 or thicker viscosity oil in severe duty such as towing or extreme heat climates (arizona 110f+) but as long as it had the same api S_ rating. People make noise about the variable timing solenoid valves but i think the computer controls those orifices to get the right timing control, , , the oil is not going to determine that because the control is dyanamic... Accounting for the range of oil temp and variety of how every engine flows oil and flows/controls oil pressure... two engines from same engines plant will not have the same oil pressures at default. Now with variable pressure and flow oil pumps, , , running a thicker oil one grade is fine imo... you might knock down mpg by a 2-3% margin at times but will def have leas wear. Thin oil is just what oems gave to spec out to meet CAFE. But in reality the engines will wear faster, burn more oil after 60-100k miles, , , so it doesnt help enviornment in long run, bug picture

[Jose-syje]

I don't see that video on your channel. I'm extremely interested in this test and you seem to be the only one on YT to have a video on this.

[fisherbrown]

2014 camry i use 5w-30 in Burn less oil. Suppose 0w-20

[benniestander]

In your car's manual, there is different oil thicknesses specified. According to where you live. So will it cause damage, no it won't

[zzxnnyvr]

My 2.5t volvo usually runs 5w-30, owners manual says 5w-30 is good for something like -30 degrees to 89 degrees and to use 5w-40 for -19 to 104. I live in AZ so temps get passed 104 in summer, but never below -19 lol. Still very noticeable improvement in heat with thicker oil... (1 grade thicker)

[bitinvaderaddict]

just follow manual, and if you want to add a little thickness in your oil, better mix it with 1 grade higher, i use 0w-20 but sometimes i mix it with 10w-30, just a little, like 200ml.

Thicker oil will produce a better engine brake, engine brake = safety.

[john_i]

I have 10th Gen Civic 1.5T, I’m in Los Angeles which is around 70-90s degrees, what my civic runs on 0W-20, what do think about running thicker oil in your opinion?

[bat__bat]

The gaps between bearings, galleries, orifices, gaskets, and seals were designed by factory to work with a certain viscosity of oil. Thicker or thinner oil risks running a less optimized lube system. In reality, it will likely run the engine the same with no difference at all that you can see or measure. If u ran the wrong thickness oil for a hundred thousand miles (same intervals between oil changes) then you might observe damage.

[MrRedHotChiliMan]

I avoid that supertech simply for the pathetic seal on the top of the jug.

[jdhjxxw]

I continued running 5w30 in a turbo 1, 2 litre engine because the previous owner ran this oil. The manual gives the 0w20 as the best choice and then the 5w30. The car brand is Toyota. The only reason i don't change to lower viscosity is because i am afraid of oil consumption with the thinner oil.. the car has 136.700 kilometres odo. What do you think about lower viscosity?

[gaspuppygarage]

Its not about wear! Its about proper oil pressure for your vvti, vtec or whatever variable valve timing you have. Use the correct oil!

[Xwhodatmikemula]

0W20 is all around the best. Especially in higher performance engines. The thicker the oil, the slower it circulates throughout the engine, which can cause more harm than good in higher performing engines. 0W20 circulates throughout the engine relatively quick, with nearly the same protection. Add fuel additives to compensate regardless.

[gvjswxf]

The idea in my mind of having thicker oil is that when you shut the car off gravity doesn't take it all down to the pan in that aspect is definitely better