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Old 01-11-2021, 02:24 AM   #26
90volvo
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the research I have done, I found nothing but positive reviews about amsoil. I have a rebuilt engine, so running their breakin oil. Then Im gonna switch to 5-40 weight. Their oil has alot of zinc in it and handles high temps well.
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Old 01-11-2021, 12:41 PM   #27
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Amsoil is good stuff, just expensive.
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Old 01-11-2021, 12:51 PM   #28
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Amsoil is good stuff, just expensive.
I'm not sure why people buy it when Castrol Edge 0w-40 oil is $23 for 5 quarts at Wally World.
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Old 01-11-2021, 01:01 PM   #29
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I'm not sure why people buy it when Castrol Edge 0w-40 oil is $23 for 5 quarts at Wally World.
Yep, that's my go-to.
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Old 01-11-2021, 01:04 PM   #30
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Yep, that's my go-to.
It's what I have ended up running in every turbocharged Volvo I have owned.
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Old 01-11-2021, 01:50 PM   #31
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What, may I ask, is the rationale for running 0W anything in a redblock?
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Old 01-11-2021, 02:39 PM   #32
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If it's the M1 version of 0-40w it says it's the European car formula on the bottle. The engineers wanted that instant oil pressure at startup. It does get really cold in Germany.
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Old 01-11-2021, 02:48 PM   #33
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If it's the M1 version of 0-40w it says it's the European car formula on the bottle. The engineers wanted that instant oil pressure at startup. It does get really cold in Germany.
My Honda FIT (RIP) took 0w20 that poured like lacquer thinner.
Surely the redblock is unhappy with such thin stuff?
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Old 01-11-2021, 03:13 PM   #34
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0w20 and 0w40 are completely different animals. Second half of the oil weight determines viscosity at operating temp, first part is viscosity when cold. Theoretically, 0w40 is having your cake and eating it too when it comes to rapid building of oil pressure on startup paired with plenty of viscosity at operating temp for engine protection.

Bearing wear etc happens primarily immediately at startup (you know, unless something is wrong)

I know I've read to avoid oils with a wide spread of weights (10w60 common in M BMWs et cetera) due to the additive package allegedly degrading and separating if it sits for too long but at best that's a very outdated school of thought and at worst my car sees daily use so it can't hardly affect me.

Plus, it's dirt cheap at Wal-Mart as others have said.
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Old 01-11-2021, 08:17 PM   #35
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Yup, it's great oil. It's nothing like the new insanely thin 0w20 or even 0w16 or 0w8.
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Old 01-11-2021, 10:27 PM   #36
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I did an oil change on a friends Honda CRV that had in big letters across the top of the engine cover yelling at you to use the 0-20w stuff in there.
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Old 01-14-2021, 11:11 AM   #37
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I did an oil change on a friends Honda CRV that had in big letters across the top of the engine cover yelling at you to use the 0-20w stuff in there.
The reason is the main bearing clearance is sized for that oil. Sloppy old red blocks need the thicker oil to maintain oil pressure.
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Old 01-14-2021, 11:48 AM   #38
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If I recall correctly some newer cars in the past few years run 0w16 with 0w8 on the horizon.

I decided to try 15w40 synthetic in my new to me B20. I wonder if 0w40 might work well. It would be nice to just go buy a bunch of the same oil for both my cars.
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Old 01-14-2021, 12:28 PM   #39
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Does it really matter? These blocks go hundreds of thousands of miles without special oils. Don't the bores and rings wear out before the bearings?

Diesel oils are nice because they have higher additive counts that are no longer allowed in conventional oils. If it is fairly stock, why not go with a diesel oil like Rotella or Delron in the weight recommended in the manual 15w-40.

I just picked up 3 gallons of 15w-40 Costco diesel oil for the racecar for about $30. I change it after every race.

Buying a high quality filter is probably more important than the oil.
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Old 01-14-2021, 12:36 PM   #40
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Quote:
Originally Posted by VB242 View Post
The reason is the main bearing clearance is sized for that oil. Sloppy old red blocks need the thicker oil to maintain oil pressure.
Ford's 5.4 mandates 5w-20 be used. The interwebs believes this is due to the narrow size of the oil passages. I have no idea if that's correct.
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Old 01-14-2021, 12:49 PM   #41
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Quote:
Originally Posted by dl242gt View Post
If it's the M1 version of 0-40w it says it's the European car formula on the bottle. The engineers wanted that instant oil pressure at startup. It does get really cold in Germany.
I've used that oil as well. Here's a Blackstone Labs report for that oil from a car I no longer own. This car had a stage 1 tune.
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Old 01-14-2021, 12:58 PM   #42
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I just picked up 3 gallons of 15w-40 Costco diesel oil for the racecar for about $30. I change it after every race.
I pick those 3 packs up at Costco for the hydraulic system of my Case GT's. I can run it in the transaxle as well.
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