I went to the store to buy Mobil 1 10w 40 for my 50hp Suzuki 4 stoke and all I could find was Mobil 1 10w40 high milage. Does Mobil 1 make a 10w 40 that is not high milage? My manual says to use 10w 40 but will another weight work? I have the same question on my t8 kicker.

Thanks in advance

bow

Mobil 1 does have a regular 10W. And no, don't use other than the recommended weight oil.

Mobil 1 is not marine certified. Go to ebay and find evinrude 4 stroke oil I have bought from a guy on there twice and the price is right and fast shipping.

Mobil 1 only offers 10W40 in their High Mileage product. Since that product contains a "seal conditioner", I would avoid it in a newer engine. Seal conditioners are intended to swell worn seals to improve sealing- not a good deal with new seals.

Mobil 1 only offers 10W40 in their High Mileage product. Since that product contains a "seal conditioner", I would avoid it in a newer engine. Seal conditioners are intended to swell worn seals to improve sealing- not a good deal with new seals.

For once, we agree! :)

my engine also specifies 10w-40. That weight is not available in Mobile-1 synthetic so I started using Castrol Syntec

Mobil 1 is not marine certified. Go to ebay and find evinrude 4 stroke oil I have bought from a guy on there twice and the price is right and fast shipping.

Not sure what exactly marine certified means, but Bass and Walleye/Trailer boats did a test and found Mobil 1 had best, or near best, corrosion resistance...even over outboard branded oils.

Be aware that Mobile have a variety of oil available now and not all of it is Mobile "1". Mobile 1 is their original synthetic oil. I think that the high mileage stuff you are looking at is just Mobile branded mineral oil. I think they have a "1000" formula for normal mileage and a "2000" product for high mileage. Both are basic mineral lube, not Mobile 1 synthetic.

www.mobil1.com (http://www.mobil1.com) explains everything

just out of curiosity I sent an inquiry to Mobil-1 tech support, asking them if I could use their synthetic 10w30 high mileage formula in my 2004 Yamaha 4stk outboard and the their reply was " Yes, it is an excellent choice for your application"

just out of curiosity I sent an inquiry to Mobil-1 tech support, asking them if I could use their synthetic 10w30 high mileage formula in my 2004 Yamaha 4stk outboard and the their reply was " Yes, it is an excellent choice for your application"

I'm not recomending to do it, but if I remember correctly, the main difference for the marine rating is corrosion protection, primarily saltwater applications. Water dilution also?

This post got me to take a look at the Suzuki owners manual. In the past the dealer has changed the oil in both my Suzuki products and used Mercury oils. This year I may tackle the general maintenance myself and let the dealer handle the 200 hour adjustments.

Suzuki did not specify a specific "marine" grade oil. Instead they use an "or" statement and spec the API ratings that are acceptable as well as a temperature chart to determine the proper SAE grade. The motor can handle a wide range of SAE grades, not just 10W-40. All the synthetics I looked at Mobile 1, Castrol Syntec, and Amsoil met at least one of the API ratings listed as acceptable by Suzuki.

A quick trip to local Farm & Fleet store and I found the Castrol Syntec was the most economical choice.

I too would shy away from oils formulated for "high mileage" or "older model" cars.

get amsoil, they are full synthetic and have 10w 40 in marine, cost a bit but well worth it, I use it on my 200 and 9.9 ht kicker suzuki

pzeyefan,

Are you using an Amsoil filter or the stock filter on your 200?

just the stock filter, I use the amsoil filter in my car and truck so that I don't need to change my oil for a year

What is the difference between marine and auto oil.I used 15w 50 Mobil 1 auto oil in my Suzuki 140 for 5 years without any problems

I called Yamaha. They told me I can use most any 4 stroke oil, as long as it is M MARINE rated. Something to do with the moist enviornment.

I also have used Mobil One 15w 50 in my Suzuki 140 for the past 6 years & have had no problems. In the motor's owners manual there is a chart with oil weights & air temp. ranges you expect to be operating in. The 15w 50 best suited my needs & exceeded the API rating Suzuki recommended.
Tony

"Marine Rated" refers to the FC-W rating many oils carry. Just means it has been through the process that assures it performs in that environment. It is a nice "piece of mind" thing,but for years we had been using oils without the rating process in place,without a problem.

Mobil 1 has not been through the rating process,but I for one would not be afraid to use it in my outboard. Regardless of the Suzuki calling for 10-40, If you want to use Mobile-1,just use the the normal 10-30 Mobile-1. Will be just fine !

Should we not drive our vehicles in the rain or park them in a damp building because we don't have marine grade oil in them?

Use the Mobil 1 0w40.

Quote:
"Should we not drive our vehicles in the rain or park them in a damp building because we don't have marine grade oil in them? "

It's not only that Marine certifications tests for corrosion resistance,etc,but also torture test the oil at sustained and much higher RPMs (6000) than what auto engines typically run at (2000-3000) ,as well as test for how it stands up to heavy fuel dilution. Not really typical conditions for cars but certainly for Outboards.

just out of curiosity I sent an inquiry to Mobil-1 tech support, asking them if I could use their synthetic 10w30 high mileage formula in my 2004 Yamaha 4stk outboard and the their reply was " Yes, it is an excellent choice for your application"

But did you ask Yamaha that? Mobil does not make your engine, they are trying to sell oil. ONLY USE A MARINE GRADE OIL!

Should we not drive our vehicles in the rain or park them in a damp building because we don't have marine grade oil in them?


As my kid would say, "are you stuck on stupid"?

Quote:
It's not only that Marine certifications tests for corrosion resistance,etc,but also torture test the oil at sustained and much higher RPMs (6000) than what auto engines typically run at (2000-3000) ,as well as test for how it stands up to heavy fuel dilution. Not really typical conditions for cars but certainly for Outboards.

This makes good sense to me, plus I was out to get some oil and filter last week (because NAPA was having a half off sale on there gold filters which lasts until this Thursday) and saw Mobile 1 for $6.99 a quart. Got my filters and stoped at the Yamaha dealer and the Yamalube is $4.99 a quart. I don't run over 100 hours in a year so why pay more for what might be less in this instance. For $30.00 a year I can do the F-150 and the T-8 and not worry about it.

I think it's best to go with your gut. Whatever makes you comfortable. Because in reality it makes little difference between brands. Regular changes is the most important thing. Fresh oil is fresh oil. It's all slippery. You may think I sound naive but I'm not a kid and this is what I have observed over the years. Of course I am talking 4-stroke lubrication oil.