15W-40 Schaeffers?

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718
Location
Central Texas
Dominic I currently use the Schaeffers 15w-40 in my F-150 4.2 L V-6 gas engine and will add to my diesel tractor very soon and my wifes Saturn in the spring. When I ordered I was going to get the 10w-30 and the 15w-40. Bob convinced me that the 15w-40 was perfect for my high mileage vehicles (all over 130k)and our hot climate. I've only had the 15w-40 the F-150 for two weeks. The engine is quieter now at start-up and seem to run smoother (smoother may be in my head). The lowest temp encountered so far has been about 36*f. No problems starting, in-fact I could tell no difference between the Mobil 1 10w-30 previously used and the 15w-40 Schaeffers. What will tell the tell is the first blue northern. In a really bad year the temp will get to 10*f for a short period. Normal lows are in the upper 20s and low 30s for very short periods of time. I plan on publishing my oil analysis results once the truck gets 6k on the Schaeffers. I will also publish the previous Mobile 1 6k results.
 

MolaKule

Staff member
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21,588
Location
Iowegia - USA
Correction: My son runs it in his Mercedes 1992, 190 E, 2.6 L straight six (its NOT a '89 183 series as I previously stated). Just changed oil in it tonight. We are going to be analyzing it soon). Reason: 1. Lower volatility than Rotella T or Amsoil AME; lower consumption, 2. Engine Clearances, 3. Slightly better gas mileage than Rotella T, 4. Easier winter starting, 5. Lower Summer Coolant Temps 6. Lower cost [ November 09, 2002, 12:59 AM: Message edited by: MolaKule ]
 
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5,069
Location
Saratoga, NY
15W40 is a little too thick for any of my cars ... but I am slowly switching my power equipment and anything I have with an air-cooled engine over to this oil. --- Bror Jace
 

Dominic

Thread starter
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1,856
Location
PA
quote:
Originally posted by dragboat: I think it was Jay that did the math and posted the 15/40 blend could be marketed as a 10w if wanted.
The 15W40 has the same pumpability as a 10W? Thats pretty cool, so really its more like a 10W40 than a 15W40 huh? Interesting [Smile] - I'll do some board hunting.
 

Patman

Staff member
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21,988
Location
Oakville, Ontario
If it qualifies as a 10w40, then why is it advertised as a 15w40? Is this because 15w40 is such a common viscosity for farmers to use, so it's easier to market it to them? Or is it simply because 10w40 has gotten such a bad rep over the years?
 
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1,874
Location
Ocala, Florida
quote:
Originally posted by Patman: If it qualifies as a 10w40, then why is it advertised as a 15w40? Is this because 15w40 is such a common viscosity for farmers to use, so it's easier to market it to them? Or is it simply because 10w40 has gotten such a bad rep over the years?
My guess, as that is all it would be, is that marketing/common viscosity has a lot to do with it. One thing most don't know or understand is that a single oil can sometimes qualify as a multiple visc oil... example... say this 15w40 obviously qualifies as a 15w, but then they may take the test to see if it can qualify as a 10w and it too can pass the same test for 10w, so now that same oil can be marketed as both 15w and 10w40. In some cases where some of these full synth's are involved such as m1 or maybe amsoil, one oil could be one in the same for say a 10w30,5w30 and a 0w30. It's just that they only need to meet the spec for that viscosity then they could label it as such, retest that same oil and if it meets the lower spec, label it as such. And for the record, I have been running the Schaeffers 7000 blend 15w40 in my 1.9L ford escort and recently switched to the Schaeffers 15w40 moly bond . I'm doing this as an experiment and will be posting results in the near future.
 
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1,933
Location
Oklahoma
Quote: "Or is it simply because 10w40 has gotten such a bad rep over the years" Before coming to this board I never heard of this.I certainly understand the VII improver thing and shearing of it and the thickening of the oil when this is done. I guess it is the quality or type of VII's added to the given brand that will make a difference and my guess would be they are all better than say 10 years ago in the upper end OTC oils but in the 80's I was running Mobil Dino 10/40 to 6k in the spring,summer and fall in a 82 LTD without apparent problems 90 percent highway. I sold the car running well with over 200k but whats there to shear when in O/D on the hiway turning 1800 RPM? Now a stick shift and or a automatic and running it hard might be another matter. If a 5/30 oil is ok,whats wrong with a 10/40? Good brands I'm talking about there [Smile] I doubt the Schaeffers 15/40 blend has as much of these VII improvers and think what is in it is a high quality type.
 

MolaKule

Staff member
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21,588
Location
Iowegia - USA
My thinking is the PAO (about 23%) in the blend extends the low and high temperature characteristics of the oil and therefore, less VII's have to be used. I do know for a fact that the VII used is one of the latest "Shear Stable" VII's.
 
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2,095
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IL
Well, looking at the MSDS, it appears the 15w40 S7k has about 10% less base oil than the 10w30. And only ~2% more base oil than the micron moly 10w40.
 
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3,845
I've tested it in 1.6L, 2.0 L Honda test engines, Cummins 5.9L TD test engine. Both Hot and cold environs. Very impressive, I think many of those tests have been posted here.
 

Dominic

Thread starter
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1,856
Location
PA
Has anyone here running it noticed a fuel economy difference with it, better or worse?
 
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1,874
Location
Ocala, Florida
I don't know about on here, but I do have quite a few that have seen the difference in mileage. Several of them have the explore with the computer and stated the computer was noting an increase. Myself, I don't keep that good a track for one and second my driving is so different at times that too makes it impossible to state I notice a difference. I might add though in my isuzu, when I change gear oils, that's when I noticed the big change in mileage. That is where you should noticed as it is where the highest amount of drag/friction is occuring and if you can reduce this friction, it will increase mileage.
 

MolaKule

Staff member
Messages
21,588
Location
Iowegia - USA
Dominic, "My son runs it in his mercedes 183XX. Reason: 1. Lower volatility than Rotella T or Amsoil AME; lower consumption, 2. Engine Clearances, 3. Slightly better gas mileage than Rotella T, 4. Easier winter starting, 5. Lower Summer Coolant Temps 6. Lower cost " He says he sees 0.5 to 1.5 mpg improvements, depending on highway or city driving.
 
Messages
194
Location
Roxboro, NC
quote:
Originally posted by MolaKule: Dominic, "My son runs it in his mercedes 183XX. Reason: 1. Lower volatility than Rotella T or Amsoil AME; lower consumption, 2. Engine Clearances, 3. Slightly better gas mileage than Rotella T, 4. Easier winter starting, 5. Lower Summer Coolant Temps 6. Lower cost " He says he sees 0.5 to 1.5 mpg improvements, depending on highway or city driving.
Dominic, I too have Increased mpg and most, but not all of my 300 +- customers see better mpg. My RV went from 7.0 to 8.2-9.00 after changing rear end lube and moly bond x 200 in the engine. Most new cars & trucks will not see an increase but most all older cars & trucks will. Many are from 5% to 10%. Sometimes even more. [Patriot] David Solomon
 
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5,336
Location
London, AR
David and Bob, As you know I use the Schaeffer's 15W40 Series 7000 in my new PSD, 15 quarts and second change. My question is this: I notice that you and Bob tend to lean to the Moly Bond over the Semi-Synthetic and I am curious why? Price is not a concern to me on this, so are there other attributes of the Moly Bond over the semi-syn that I am missing?
 
Messages
5,336
Location
London, AR
David, Thanks for the reply. I am very happy with the 15W40 7000 blend and I didn't want to change as my first analysis on this oil was excellent and the engine runs great so far. My next analysis will be all winter driving so I am looking forward to the second analysis on the 7000.
 
Messages
718
Location
Central Texas
I've noticed a minor benefit from using the 15w40 7000. Ever since the first winter with my 98 f-150 moisture has condensed in the oil filler neck causing emulsification of the oil that splashes into the filler neck. Never any water in the oil or antifreeze in the oil. No emulsification in the drain or under the valve cover on that side. Just in the filler neck. And just in low dew point weather. Since I switched to the 15w-40 no emulsification. I have no idea why the switch may have helped or if its my imagination.
 
Messages
194
Location
Roxboro, NC
quote:
Originally posted by 59 Vetteman: David and Bob, As you know I use the Schaeffer's 15W40 Series 7000 in my new PSD, 15 quarts and second change. My question is this: I notice that you and Bob tend to lean to the Moly Bond over the Semi-Synthetic and I am curious why? Price is not a concern to me on this, so are there other attributes of the Moly Bond over the semi-syn that I am missing?
[I dont know] Well, it's kinda hard to have a good answer for that! I guest it's because that's what I used in my trucks for 10 years and going to 24,000 miles on intervals, and no problems at all. I have many heavy equipment customers and some use moly bond and others use Supreme 7000. The moly bond in (my) opinon does better than the Supreme 7000 in older heavy equip. Why ? I really don't know. I guess that's what I sell more of, to these customers. They may have a few newer pieces of equip. and many older pieces. I just think the moly bond and micron moly are better choices for older and higher hrs/miles on cars trucks and heavy equip. When I go to a new prospect of this type and I see alot of older things setting on the yard, then I just talked about moly bond Just My Opinon [Burnout]
 
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