Can anyone instruct me on which of these is the correct filter? I have seen many posts citing the M1C-151 and one post citing the M1C-151A. I bought both and can't seem to get the filter cap to thread with the 151 but can with the 151A which fits inside the 'cup' in the filler cap. I don't want to get this wrong so any help will be greatly appreciated! 
Mobil Oil Filter Quetion: M1C-151 vs M1C-151A
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@MWSlingshot, @Slingrazor ....?
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What type of oil and oil filter for my car? | Mobil™ Motor Oils
It appears that the "A" stands for advanced, supposedly a higher performance oil filter only?
1 x Mobil 1 M1C-151A Extended Performance Oil Filter (compatible with M1C-151)
Mobil 1 Extended Performance Oil Filters offer the ultimate protection for your engine – especially when used with Mobil 1™ fully synthetic motor oil. In fact, a Mobil 1 Extended Performance oil filter can provide one full year* of guaranteed protection when used with Mobil 1™ Annual Protection motor oil.
Benefits:
- Provides long-life performance for today's longer drain intervals
- Effectively removes contaminants, with a 99.6 percentage Multi-Pass Efficiency Rating and an advanced synthetic fiber blend media
- Holds double the contaminants compared to other filters, with 28.0 grams of total capacity
- Withstands nine times normal system operating pressure, for exceptional protection up to 615 pascals per square inch
- Prevents dry starts by eliminating internal leakage during shutdown through the use of a silicone anti-drain back valve (where required by OEM)
Bill
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What type of oil and oil filter for my car? | Mobil™ Motor Oils
It appears that the "A" stands for advanced, supposedly a higher performance oil filter only?
Bill
They are actually different size and shape. The 151 is taller by about 1/4" with a shorter nipple.
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The 151 is taller by about 1/4" with a shorter nipple.
I've known a few gals like that...
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I've known a few gals like that...
I expected pics!
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Typically "long life" or "extended drain" filters do not filter as well standard filters... yes they are usually beefed up to withstand higher pressures so they do not fail with high contaminate loads but they also usually do not filter as small a particle to prevent contaminate loading over a longer expected service life, notice they used the multi-pass test rather than a single pass test rating .....
In multiple filter set ups you use a "long life" filter for the first pass then a standard filter in the second position to catch what was missed .....
If you are doing frequent oil changes it is better to stick with a standard life filter ....
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Display More.
Typically "long life" or "extended drain" filters do not filter as well standard filters... yes they are usually beefed up to withstand higher pressures so they do not fail with high contaminate loads but they also usually do not filter as small a particle to prevent contaminate loading over a longer expected service life, notice they used the multi-pass test rather than a single pass test rating .....
In multiple filter set ups you use a "long life" filter for the first pass then a standard filter in the second position to catch what was missed .....
If you are doing frequent oil changes it is better to stick with a standard life filter ....
....
Display More.
Typically "long life" or "extended drain" filters do not filter as well standard filters... yes they are usually beefed up to withstand higher pressures so they do not fail with high contaminate loads but they also usually do not filter as small a particle to prevent contaminate loading over a longer expected service life, notice they used the multi-pass test rather than a single pass test rating .....
In multiple filter set ups you use a "long life" filter for the first pass then a standard filter in the second position to catch what was missed .....
If you are doing frequent oil changes it is better to stick with a standard life filter ....
....
Good info, slightly over my head (another opening for @KayTwo) - but doesn't help with my current dilemma. 151 or 151A.
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Is it alright to post something from another forum, there is lots of reading here but I think that you will find your answer?
DIY Oil Change - The Big Thread [ filter / wrench / crushed / gasket ] | Polaris Slingshot Forum
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I've known a few gals like that...
I expected pics!
I miss being on the road with you sick bastards
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Is it alright to post something from another forum, there is lots of reading here but I think that you will find your answer?
DIY Oil Change - The Big Thread [ filter / wrench / crushed / gasket ] | Polaris Slingshot Forum
I've been reading there too. Again, the 151 is listed as an option. I just can't figure out why I can't thread the cap on with that one.
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I've been reading there too. Again, the 151 is listed as an option. I just can't figure out why I can't thread the cap on with that one.
ummm righty tighty, lefty loosey
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I miss being on the road with you sick bastards
Come join us for a ride up to Mt. St. Helens Wednesday. Only 5 states away. If you leave in the next 15 minutes you could make it!
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I'm probably wrong, but my guess is the plain 151 is US use, and the 151A is Canadian. The guy in marketing thought that marketing the Canadian one as 151 eh? might cost them too many customers
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Good info, slightly over my head (another opening for KayTwo) - but doesn't help with my current dilemma. 151 or 151A.
Without actually saying it I was recommending you stick with the standard 151 that you know fits correctly and will filter better if you are sticking with regular oil change intervals ....A physically longer filter will end up looking like this when installed .....
Yes, that came out of a Slingshot ..... not mine ....
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151 is the best choice to use. The 151A is not!
Problem solved!
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151 is the best choice to use. The 151A is not!
Problem solved!Mike, thanks for chiming in, and for using short words for Doug's benefit.
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I miss being on the road with you sick bastards
Absolutely.
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I use the K & N PS-7000, around $8 at he parts store or about 1/2 price ($4.50) bulk buy or on the internet. I buy bulk because I have two vehicles to change at least every 5,000 miles. Hell! that is 5 oil changes a year just for the SS.
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OK, I confused but that is not hard to do. At Walmart last week to get oil and filter. No Mobile 1 filters on shelves without "A" at end. Asked what was going on an they said that is the new number, same filter. I looked on Mobile 1's site and they show 151 as old number and 151A as new. I installed 151A, do I need to change it out? What is difference in 151 and 151A, still don't know? Saw what @MWSlingshot said above but would like to know difference in them, if any?
