M1 5W30 vs. 10W30 vs 0W40 vs. 5W40

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With summer upon us I would definately go for the Walmart trip!!!! 5W40 is going to be the most shear stable of the choices you mentioned!
 
I have heard that some people add 1 Qt of Redline to 4-5 qts of M1 to get the addiditives (Moly?). Since there are concerns about reduced additives in the newe M1, would it make sense to add a Qt of Redline, or even Mobil EP? Any thoughts?
 
You're not tuning or tracking, and it doesn't appear that you'll be desert driving much, so the RL might be overkill considering the great alternatives.

I'm not a big fan of mixing between brands, but others here seem to be OK with it. I'd either go with straight RL or M1, but that's just me. Perhaps a quart of M1 15w-50 EP (also A3 and a great oil) in with the 0w-40 during the summer might work. Or maybe a little LC or one of the other add boosters might help if you have a concern with SM on a long OCI.

The Delvac 1 5w-40 is probably the best of the OTC bunch for year round use AFAIK, but there's that potential warranty concern. 99.999% chance you'll have no problems on it, though.

OR, if you can find an EOM distributor, maybe they'll order you a decent quantity of M1 10w-40 EP. That should be very shear stable and a fine all season choice.

Choices, choices, choices.

But the easy (to find) pick remains the 0w-40. It's a top tier oil, make no mistake. We're really just talking about different flavors of premium caviar at this point. They're ALL extremely good oils and very acceptable for the R.

Go with the 0w-40 (I'd go straight with 4-5K mile OCIs, or adding LC or another booster if longer) and don't look back until warranty expiry. You'll have so many great oil choices when that time comes and plenty of time to think about some more.
 
Hmm, I thought I had my mind made up, but the current heat wave is making me biased towards the 5W40/Delvac oil. Volvo recommends an A3 oil, but does not require it, unless the oil is a 0W. So I don't think warranty is an issue with th 5W40.
 
Well, I broke down and went to Wally World. They had the 5W40 Truck and SUV oil, but did NOT have the 0W40 European car oil. So, 5W40 it is! Case closed.

Thanks for all of the help!
 
quote:

Originally posted by DockHoliday:
Well, I broke down and went to Wally World. They had the 5W40 Truck and SUV oil, but did NOT have the 0W40 European car oil. So, 5W40 it is! Case closed.

Thanks for all of the help!


I just checked my local Wally World yesterday. I had not seen 0W-40 there until yesterday, so yours might stock it soon.

Do you have a Kragen Auto Parts (a major chain) near you? The ones near me stock 0W-40. Every few weeks, in the Sunday paper, they have a coupon for M1 for $3.99/quart. I just wait until I get a coupon, then stock up.
 
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With the M1 0w-40 it happened twice on 105+ days and made for a very uncomfortable ride. I switchd back to the RL 10w-40 and it never happened again. I think M1 oils are on the thin side of their posted viscosity ranges.
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That's an unfair comparison unless you try M1 10W-40.
 
Doc,

I have a customer running the S3000, 5w-30 in 7.4L, Mercruiser inboards (used in tandem to power a 1994, 37' "SeaRay"), with excellent results. Oil consumption is about the same as the AME/15w-40 and fuel efficiency is even better. MM calls for an SAE 25w-40 for this application....

Let's see U try that with the Mobil 1, 0w-40...
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Tooslick
 
quote:

Originally posted by TooSlick:
Doc,

I have a customer running the S3000, 5w-30 in 7.4L, Mercruiser inboards (used in tandem to power a 1994, 37' "SeaRay"), with excellent results. Oil consumption is about the same as the AME/15w-40 and fuel efficiency is even better. MM calls for an SAE 25w-40 for this application....

Let's see U try that with the Mobil 1, 0w-40...
wink.gif


Tooslick


I am running S3K in the boat, and that is what was in my car between the S2K and M1 0W40. The idea behind getting the S3K was an oil that I can put in the boat and the car. I quit using Amsoil because I got sick of all of the crap they send me in the mail, and I hate having to pay to become a "preferred customer".
 
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got sick of all of the crap they send me in the mail, and I hate having to pay to become a "preferred customer".

Only $20 though?
dunno.gif
Doug, I HATE Amsoil's marketing and dealers probably more then anyone on here. But they do make a good product. I've YET to meet an Amsoil dealer/salesman that actually knows what he is talking about other then the 3 guys we have on here. I over look it...
cheers.gif
 
Well, based on the UOA, I think you guys are correct about the 30Wt now being a good choice!

I am now running the M1 5W40 SUV/Delvac, but I very well may switch back to Amsoil after I get the input from Terry.
 
quote:

Originally posted by Volvohead:
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Perhaps a quart of M1 15w-50 EP (also A3 and a great oil) in with the 0w-40 during the summer might work.


Thats what my suggestion would be. Even with one of the 5w-30 oils, the 15w-50 EP would thicken it up and the extra in the EP oil would not hurt either.
 
I think that Delvac 1, 5w-40 would work well in both these applications. The only potential issue would be that the low temp viscometrics aren't going to give you the performance and/or fuel efficiency of an 0w-xx formulation in the car engine. Something like the GC/0w-30 would be a better choice for the Volvo turbo.

A less expensive choice than the Series 3000 is the new Amsoil 10w-30/30wt (ACD) formulation. It's priced the same as the Amsoil 15w-40 - about $22.00/gallon - and is ACEA A3/B3 rated for high performance, gas engine passenger cars. I'd be tempted to try that oil for both these applications, since it's made without polymeric thickeners.

The Amsoil 10w-40, Motorcycle oil would also be on my short list, due to it's excellent shear stability and off-season, rust/corrosion protection. Again, you'd compromise a bit in the winter with that oil in the Volvo, compared to running the Amsoil 0w-30. However I think you'd see exceptionally low valve train and ring/cylinder wear with the 10w-40, MC oil.

Ted
 
Ted, I wrote to Amsoil and asked them about this oil and they wrote back saying that it does not meet the HT/HS numbers to be A3 rated (>3.5cP). With a viscosity of 10.9 Cst's @ 100ºC it would be a stretch to meet ACEA specs. This is THE issue I have with Amsoil.

If I had this Volvo it would be fed Mobil T&SUV 5W-40 year round.
 
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