Where's the best place to get mobil 1 filters? My parts dept couldn't locate them locally.

O'reilly, pep boys, autozone all carry line but do not always have stock

Also this may help

http://www.mobil1.com/index.jsp

I hope to clarify a few things from these comments. There a lot of misunderstandings.

"A 30-70 weight oil was used." I couldn't figure out where this came from, then I realized what the confusion was -- No, a non-detergent 30 grade oil was used at 70 degrees F. A non-detergent oil was used because additives in detergent 30W oil were giving inconsistent readings with the test equipment. A 30W oil was used, again, for consistency in test results.

"Oil was mixed with glycerin." No, oil was tested thru the filter media, then glycerin was tested in a separate test to insure accuracy. Glycerin is used commonly with bubble testers as a neutral benchmark fluid.

"It was a "hobiest" that did the study with a budget of $ 150.00 total." While, yes, I am a hobbyist, the media was tested by a professional in the filter industry. The $150 was for filters paid for out of my own pocket. The testing would have been prohibitively expensive had I paid for it and I think added considerably to the study. Without it, the study would been just another can opener test.

"The oil used was non-synthetic." Yes, but the oil used was the same for comparison purposes. The numbers mean nothing by themselves. Comparing the numbers gives us relative standings amongst the filters. If a filter flows twice as good as another with dino oil, it will probably do the same with synthetic. The same for 70F vs. 200F.

"Flow-rates were measured at 10 psi." Yes, but it was also tested at 20psi. Tests were done at both psi settings to make sure that "relative" trends between the filters registered consistently. 10psi was used for the final flow numbers because that test was run for twice as long as the 20psi tests. No, your boat doesn't run at 10 or 20psi, but these were the settings of the test equpment to give relative results.

I hope that clears up the confusion on some of the misconceptions about the study.

Personally, from the test I will run Hastings LF279, Purolator Premium Plus L34631, or K&N 3002. I have a Hastings LF279 lined up for my next filter change. These three filters mentioned flow as good or better than the Merc and filter better. I'm surprised to read on this site that many of you are running M1 302's as I witnessed them to flow half what the Merc filter does. I could see an argument for an Amsoil SDF24 in a boat as the flow is just about up with the Merc.

In a car, all bets are off an you can choose your favorite, but in a boat, if I am going to run anything other than OEM, I'm choosing one of the above four.

The key columns to look at in comparison are "I" and "L" that are bolded in the spreadsheet for filtration and flow. http://www.oilfilterstudy.com/Grease...er%20Study.xls

I will use the misunderstandings listed to make better explanations in the text of the study.

If you have any other questions, please let me know.

I'm reading more on your forum to learn more about boat oils as I am still undecided on what I want to run.

My last UOA showed a 6% fuel dilution after 53 hours, so I am going to run shorter OCI's. With OCI's at ~25 hours, I am reluctant to go with high end oils because of the price.

Cheers,

Grease