Dropped in the Amsoil 10W-40

[Pablo]

In the Volvo 855. After the 20K, I just went about 5K miles with the ASL 5w30 (didn't do a sample for used oil analysis).

The Amsoil 10W-40 (AMO) is in the same basic construction category as the ATM (10W-30) and ASL (5w30) as far as I can tell. Same price. (cost me just under $4.50 qt)

Anyhow this is the first time this car has seen synthetic XW-40. I can say the idle is more quiet. Interesting. I will run it 5-10K miles and do a used oil analysis. Using a Mann (Volvo OEM) OF.

 

[Patman]

No UOA Pablo?

 

[Pablo]

Patman:

quote:

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No UOA Pablo?

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Sick, I know. The last one at 20K was pretty good - I just figured at 5K the oil should be fresh. I shoulda saved it for the mower.

I'll do one on the 10W-40 (about next year)

 

[buster]

quote:

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The 10w-40 is SL/CI-4 rated for use in gas and diesel engines. It is the diesel requirement that drives the use of the calcium based detergent chemistry and the absence of friction modifiers.
This probably isn't the optimum Amsoil product to use in this application, but I happened to have some around. I noticed the 10w-40 also thinned out a bit when used in the Subaru URX, but I haven't noticed it in N/A engines. The lack of oxidative thickening also means that you are going to notice and shearing that occurs

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Pablo, TS ran this oil in his TT and had this to say about it. I don't think it has any FM as stated above so you might want to consider that.

 

[metroplex]

Interesting - Mann air filters are the OEM air filters for Mercury Marauders.

 

[buster]

I brought this back up bc I wasnt sure if Pablo read this.

 

[Pablo]

Thanks Buster. I remember reading that. Considering the car has lived most it's life on 5w30 and that the car is not a turbo, I think this oil will be good. As I said I'll do analysis at 7.5K miles or so and see what gives.