Mobil 1 ESP in hybrid

[mdc09]

I would never run a 30wt period in a diesel engine.

It performs very well on the 3.0 Duramax.

 

[M.F. Horn]

I recently ran Mobil 1 ESP 0W20 in my 2023 Rav4 Hybrid 2.5L.. Quietest Mobil 1 oil I have used soo far and the only oil I have used that did not wreak of fuel at 4K miles soo far. Will be purchasing again in the near future.

I'm using Mobil 1 Advanced Fuel Economy 0W-30 in my 2025 Camry, and my oil wreaks of fuel when I change it at 3000 miles. It's not enough dilution to affect the oil level on the dipstick. Would using the Mobil 1 ESP 0w30 or Mobil 1 ESP 5w30 stop the gas from getting in the oil? Or maybe just a regular 5w30?

 

[Japanese]

It will get hot faster than the 20 grade.

Where this info comes from?
I would say it's the opposite - lower viscosity oil get up to working temp. faster than a higher viscosity oil.

 

[mdc09]

Where this info comes from?
I would say it's the opposite - lower viscosity oil get up to working temp. faster than a higher viscosity oil.

No higher viscosity will heat up quicker.

 

[JD!]

I'm using Mobil 1 Advanced Fuel Economy 0W-30 in my 2025 Camry, and my oil wreaks of fuel when I change it at 3000 miles. It's not enough dilution to affect the oil level on the dipstick. Would using the ESP 0-30 or ESP 5-30 stop the gas from getting in the oil? Or maybe just a regular 5-30?

No, but the Mobil 1 ESP variant does have a slightly higher starting viscosity than the Mobil 1 Advanced Fuel Economy if you're looking to compensate for some dilution. 12cSt vs 10.5cSt kv100. Won't do a ton for you, but it's there.

It doesn't take much to make oil reek of gas though, so an oil analysis with GC to figure out where you're at as far as fuel dilution and how much it's thinning the oil would be good if you're concerned. Probably nothing to worry about on such a new car unless you're only driving it a mile to church every Sunday.

 

[Japanese]

No higher viscosity will heat up quicker.

There is no scientific proof of that.

 

[JD!]

There is no scientific proof of that.

I'd imagine it's very minimal, but it's pretty intuitive to me that a fluid with a higher internal friction will generate more heat as it moves around an engine.

 

[Japanese]

I'd imagine it's very minimal, but it's pretty intuitive to me that a fluid with a higher internal friction will generate more heat as it moves around an engine.

The oil primarily get's warmer and eventually hotter, not because it's own friction in the engine block passages, but because absorbs heat from the rotating parts of the engine, especially the pistons that get really hot.

 

[JD!]

The oil primarily get's warmer and eventually hotter, not because it's own friction in the engine block passages, but because absorbs heat from the rotating part of the engine, especially the pistons that get really hot.

Yes, that's a given. Not my point though.

 

[Plumb Bob]

Where this info comes from?
I would say it's the opposite - lower viscosity oil get up to working temp. faster than a higher viscosity oil.

Use the search function.

 

[M.F. Horn]

No, but the Mobil 1 ESP variant does have a slightly higher starting viscosity than the Mobil 1 Advanced Fuel Economy if you're looking to compensate for some dilution. 12cSt vs 10.5cSt kv100. Won't do a ton for you, but it's there.

It doesn't take much to make oil reek of gas though, so an oil analysis with GC to figure out where you're at as far as fuel dilution and how much it's thinning the oil would be good if you're concerned. Probably nothing to worry about on such a new car unless you're only driving it a mile to church every Sunday.

I'm not concerned about dilution- was just curious. I do a lot of short trips everyday- about 10-mile trips with stops and starts. My main goal is to try to get 300,000 miles out of this car.

 

[kschachn]

There is no scientific proof of that.

The primary source of heating in the oil is by shear heating in the bearings. A higher viscosity oil will heat faster. This isn't even a discussion. It's also why oil heating is primarily connected to engine RPM, not load. If you want the oil to heat up faster in cold weather, then drive at a moderately high RPM.

Using the search function is a good idea. We've had multiple posts on this topic, perhaps you've missed them despite being here seven years.

 

[Japanese]

Use the search function.

I did my search some time ago.

Here's what I found.

When oil is too thick, it can also extend the engine’s warm-up time, make it less efficient, and sometimes cause damage to the engine.

https://www.vioc.com/newsletters/march-2023-newsletter/March-2023-1/#:~:text=What Does Viscosity Mean?,fully lubricate the engine's parts.

Selecting the Right Oil for Your Vehicle (section)

• Opt for thinner oils like 5W20, which flow better during cold starts and help your engine warm up faster.

https://www.autozone.com/diy/motor-oil/viscosity-5w20-vs-5w30-vs-10w30

Here is a fellow BITOGer MolaKule:

Generally speaking, the denser and thicker the oil the more heat it can abosorb, but it takes a longer time to absorb the heat.

A thinner oil, while having a slightly lower heat capacity, actually transfers heat quicker because it moves faster.

https://bobistheoilguy.com/forums/threads/which-transfers-heat-better-thick-or-thin-oil.10413/

In these words people who claim thicker oil gets up to temperature quicker (than lower viscosity oil) are wrong.

 

[kschachn]

I did my search some time ago.

Here's what I found.

https://www.vioc.com/newsletters/march-2023-newsletter/March-2023-1/#:~:text=What Does Viscosity Mean?,fully lubricate the engine's parts.

Selecting the Right Oil for Your Vehicle (section)

https://www.autozone.com/diy/motor-oil/viscosity-5w20-vs-5w30-vs-10w30

Here is a fellow BITOGer MolaKule:

https://bobistheoilguy.com/forums/threads/which-transfers-heat-better-thick-or-thin-oil.10413/

In these words people who claim thicker oil gets up to temperature quicker (than lower viscosity oil) are wrong.

You really don’t understand what you’re reading sometimes. You have a partial understanding which you extrapolate.

 

[4wd]

I did my search some time ago.

Here's what I found.

https://www.vioc.com/newsletters/march-2023-newsletter/March-2023-1/#:~:text=What Does Viscosity Mean?,fully lubricate the engine's parts.

Selecting the Right Oil for Your Vehicle (section)

https://www.autozone.com/diy/motor-oil/viscosity-5w20-vs-5w30-vs-10w30

Here is a fellow BITOGer MolaKule:

https://bobistheoilguy.com/forums/threads/which-transfers-heat-better-thick-or-thin-oil.10413/

In these words people who claim thicker oil gets up to temperature quicker (than lower viscosity oil) are wrong.

Except generating heat and removing residual heat are not the same.

 

[M.F. Horn]

Heat schmeat. It all works

 

[Japanese]

You really don’t understand what you’re reading sometimes. You have a partial understanding which you extrapolate.

Sure, but those are writings that back up my opinion.

 

[Japanese]

Except generating heat and removing residual heat are not the same.

Exactly, and I'm not talking about either one.
I talk about what oil heats up to work temp. quicker.

 

[Astro_Guy]

I'm using Mobil 1 Advanced Fuel Economy 0W-30 in my 2025 Camry, and my oil wreaks of fuel when I change it at 3000 miles.

Why are you changing the oil at 3k when Toyota says to go 10k? Severe duty or just because? Doesn't your car call for 0w-16?

 

[tired]

I thought the Mobil 1 Extended Performance gives better protection and more additives?

According to whom? Mobil 1 marketing? It has one approval I know of. Mobil 1 ESP has all of the most stringent Euro approvals.