Thoughts on my treatment plan.

Pennzoil motor oil
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Eosyn

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Use Mobil 1 Advanced Fuel Economy 0w30 in winter and Castrol High Mileage 5w30 in summer.

My reasoning (concerns) are as follows:

  • 1. Last winter, when temps (with windchill) got down near minus 40F for a week or two, my drivetrain made a horrible, nasty grumbling, grinding noise. Even at operating temperature, the noise didn't subside much. Hoping the 0w30 will help with that and to get good gas mileage.
  • 2. Like to use high mileage oil to help condition the seals and rings so my vehicles won't consume any extra oil. Currently, neither one need to be "topped off."


Would love to use a 0w30 high mileage oil year round, but can't seem to find any, hence my plan. Decent plan or am I being paranoid? Also, at what temp (in degrees F) does a 0w protect to? Both my vehicles call for 5w30, since they are identical engines.
 
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Automobiles are not effected by wind chill, people are. Your plan is OK, but unless you have leaks or a specific need for a High Mileage mile oil I would skip it and use the AFE 0W30 year round. In extreme cold it will give you an edge over a 5w30 oil.

I'd use High Mileage oil only if I was addressing a specific problem, like leaks or high oil consumption.
 
Originally Posted By: Eosyn



Also, at what temp (in degrees F) does a 0w protect to? Both my vehicles call for 5w30, since they are identical engines.


OW oils' cold pumpability is measured at -40C.
 
Your 2005 Corolla can use 0w20 all year around if you can find it. I have used 0w20 for some time with no issues. If you want run a 0w20 Mobil EP with a good filter and run it all winter long. Should be able to get some at your local walmart or for possibly the same price you can go to a Toyota dealer and run TGMO 0w20, I paid a 5.55 per quart here in canada a couple months ago, so it works out to similar price as the Mobil branded stuff.
 
Originally Posted By: demarpaint

I'd use High Mileage oil only if I was addressing a specific problem, like leaks or high oil consumption.


You wouldn't use High Mileage oil to prevent leaks or high consumption?
I understood that High Mileage oil can be used to prevent leakage for vehicles over 75k miles. Maybe I'm too gullible to the manufacturer's marketing?


Originally Posted By: A_Harman

OW oils' cold pumpability is measured at -40C.


Thank you, good to know.


Originally Posted By: Rolla07
Your 2005 Corolla can use 0w20 all year around if you can find it. I have used 0w20 for some time with no issues.

Yes, plenty of 0w20 oil available here. Just concerned that a w20 might have oil burn-off at a lower temp than w30? Good to know that my Corolla can use 0w20. That grade is more readily available than the 0w30.
 
Originally Posted By: Eddie
At -40F, you need a block heater.


He doesn't need a block heater. On a modern, well maintained car, they start just fine in the winter in the lower 48. And BTW, he's not seeing -40 anywhere in Michigan. Minus 20, maybe a couple days a year. Don't get me wrong, a block heater is nice to have, but to get a car to start, just run 0-20 oil and keep the car in tune. I live in Minnesota and the only times I had issues were in the 80's with beaters with carburetered engines.
 
Originally Posted By: OneEyeJack
At -40F you need an airplane ticket to Southern California.

My Honda has never seen temperatures below 35F.
And gas is "cheap".
 
Originally Posted By: Eosyn
You wouldn't use High Mileage oil to prevent leaks or high consumption?
I understood that High Mileage oil can be used to prevent leakage for vehicles over 75k miles. Maybe I'm too gullible to the manufacturer's marketing?


It's not marketing. I would use the high mileage too especially if it's a high mileage vehicle. If you don't have leaks now, the high mileage oil will still help condition the seals to prevent future leaks.

For instance. Yesterday I changed the front seal on a 3.1 engine because the harmonic balancer was going bad and wobbling. The seal sits right behind the balancer, and it had a slow leak. The motor has about 80k on it, and the front seal was already starting to harden. The new seal was significantly more pliable than the old seal which is normal. Oil wise from now on, the engine will only get high mileage oil.
 
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I would use the 0w30 year-round. High Mileage oil has its uses... but just switching to one because you have 75k miles (hardly "high" mileage even by 1980 standards) is not a valid reason. No leaks, no consumption, no flat-tappet cam, no need for an High Mileage oil. Period. Furthermore, no High Mileage oil does ANYTHING for rings. It conditions rubber seals, and (often) doesn't meet the latest API standards so that it can have more ZN/P additives for flat tappet cams. That's about it.
 
Mechanical objects are not subject to "Wind Chill". Wind chill is the effect that movement of cold air has on bare skin, because of its moisture content and the faster drop in temperature that skin is subject to, because of the air movement.

Iron and aluminium are not cooled to any lower temperature than ambient. They may cool somewhat more quickly in the wind, but the ultimate bottomed out temperature is still no lower than ambient. So......If the coldest it gets is -20F, 50 mph of wind will make no difference, in starting your car. GETTING TO your car might be more difficult, but once you do, the engine will not be any colder than whatever the thermometer says.....Wind does not apply.
 
Originally Posted By: Eddie
At -40F, you need a block heater.


Not if it's -40F "wind-chill". Only the air temp matters...

To the OP: I'd personally use Mobil 1 0W-20 Extended Performance in winter and Mobil 1 5W-20 High Mileage in summer, bought with the $12 rebates of course.
 
Originally Posted By: Eosyn
Use Mobil 1 Advanced Fuel Economy 0w30 in winter and Castrol High Mileage 5w30 in summer.

My reasoning (concerns) are as follows:

  • 1. Last winter, when temps (with windchill) got down near minus 40F for a week or two, my drivetrain made a horrible, nasty grumbling, grinding noise. Even at operating temperature, the noise didn't subside much. Hoping the 0w30 will help with that and to get good gas mileage.
  • 2. Like to use high mileage oil to help condition the seals and rings so my vehicles won't consume any extra oil. Currently, neither one need to be "topped off."


Would love to use a 0w30 high mileage oil year round, but can't seem to find any, hence my plan. Decent plan or am I being paranoid? Also, at what temp (in degrees F) does a 0w protect to? Both my vehicles call for 5w30, since they are identical engines.


Mobil does not make a high mileage oil available in 0W-30.

Do you have a Walmart near you? If yes, they sell Mobil 1 0W-30.

Myself, I have never bought into the "high mileage" oil, just a gimmick.

You could also try Amsoil. They deliver to your door.
 
Originally Posted By: Eosyn
Originally Posted By: demarpaint

I'd use High Mileage oil only if I was addressing a specific problem, like leaks or high oil consumption.


You wouldn't use High Mileage oil to prevent leaks or high consumption?
I understood that High Mileage oil can be used to prevent leakage for vehicles over 75k miles. Maybe I'm too gullible to the manufacturer's marketing?



I'd use it only if I needed it. Regular oil has additives for seals already in it. If I don't have a leak,and don't use oil I don't see a need for it.
 
Originally Posted By: 440Magnum
High Mileage oil has its uses... but just switching to one because you have 75k miles (hardly "high" mileage even by 1980 standards) is not a valid reason. No leaks, no consumption, no flat-tappet cam, no need for an High Mileage oil.


Totally agree. I've felt this way for a long time.

Of course I don't know the mechanical condition of your car... but your Toyota's are relatively low mileage in my experience.

I would go Mobil 1 Advanced Fuel Economy 0w30 year round as well.
 
Originally Posted By: stchman
Myself, I have never bought into the "high mileage" oil, just a gimmick.


Quality high mileage formulas are boosted, and depending on what you buy have more anti-wear additives and seal conditioners. Seals get harder with age and heat.

Check the Mobil 1 High Mileage zinc and phosphorous levels. That's a boosted formula compared to the regular Mobil 1.

https://mobiloil.com/~/media/amer/us/pvl/files/pdfs/mobil-1-oil-product-specs-guide.pdf
 
Originally Posted By: BigD1
Originally Posted By: stchman
Myself, I have never bought into the "high mileage" oil, just a gimmick.


Quality high mileage formulas are boosted, and depending on what you buy have more anti-wear additives and seal conditioners. Seals get harder with age and heat.

Check the Mobil 1 High Mileage zinc and phosphorous levels. That's a boosted formula compared to the regular Mobil 1.

https://mobiloil.com/~/media/amer/us/pvl/files/pdfs/mobil-1-oil-product-specs-guide.pdf


He can try it, but I doubt it will do anything.

From everything I have read, it seems Valvoline MaxLife has the best testimonials for using their high mileage oil.
 
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