Oil question

[flyboy]

My 05 Ci Engine manual states wrt oils...
5.7L/350CID

Marine Power does NOT recommend the use of multi-viscosity, non detergent type oils. Oils that contain solid additives or low quality oils0other than 20w-40 20w-50) are also not recommended.

The chart sez...below 32 20w...32-50 30w..above 50 40w

Since our temps vary from 20 to 100 over the course of the year, I find this to be a bit confusing. During winter storage (inside non heated) it certainly can reach 20.

In the boat, I have 20w-40 for the past year as recommended by my local boat dealer (non Tige dealer).

Is 20W-40 the proper type?

TIA, Paul

[illiniboarder88]

I honestly don't think the weight is going to matter if you aren't turning it over. I think in certain conditions, the engine has a harder time turning over with heavier weights of oil. If it's just sitting, I don't think weight will matter.

[chpthril]

Do you ride when it's 20* out?

The first number is the cold engine start-up viscosity, the 2nd is the warm engine viscosity. If you ride when air temps are getting low, then a multy-vis with a lower 1st number is best to give good pumpability and lubrication when starting cold. If you ride only when it's Summer time temps out, the a single weight is fine.

Storage should not play a roll in oil viscosity.

[flyboy]

Do you ride when it's 20* out?

The first number is the cold engine start-up viscosity, the 2nd is the warm engine viscosity. If you ride when air temps are getting low, then a multy-vis with a lower 1st number is best to give good pumpability and lubrication when starting cold. If you ride only when it's Summer time temps out, the a single weight is fine.

Storage should not play a roll in oil viscosity.

You last sentence sums it up. Thanks! And no, at 20, the lake is frozen

I'll continue to use Merc 20W-40

[flyboy]

Oil changed done! I would like to SHOOT the engineer that decided to place the oil filter under the engine with limited to NO area to work

[dogbert]

Oil changed done! I would like to SHOOT the engineer that decided to place the oil filter under the engine with limited to NO area to work

Be thankful you don't have a V-Drive.

[scoot18]

you can install a remote oil filter housing kit that will eliminate that whole hard to get to headache, and I second the motion, be glad you don't have a V drive.

[da.bell]

Be thankful you don't have a V-Drive.

Mine is easy to get at. It's almost in from of me when I open the starboard side engine wall.

[chpthril]

I'll take my V-drive any day, pull of the side-wall and BAM, it's right there

[flyboy]

you can install a remote oil filter housing kit that will eliminate that whole hard to get to headache, and I second the motion, be glad you don't have a V drive.

Where can/should I pick up the "remote oil filter housing"?

[lee]

Be thankful you don't have a V-Drive.

Yeah especially a Merc v-drive like you have with the mufflers also in the way. Almost as much fum as the drain plug on the fuel cooler.

[gman]

flyboy
where do you get 20-40 oil? I know of 25-40 that merc sells but have not seen 20-40 oil for at least 15 years made by anyone. I know it was around in the 70's.

[TeamAllen]

He probably means Synthetic Blend MerCruiser Engine Oil 25W-40.

[gman]

they also make regular oil that is 25-40