Oil Question

[jeffersw]

Just a quick question for all you PCM Guru's -

I have a 2007 SAN 220 with the 330EX - I know the manual says that above 50F to use 15-40 and below to use 5-30. However the boat is used in the Middle East where right now the outide temps during the day are between 120-130F and lows are in the upper 90's. I have searched all over for 15-40 and can't find it anywhere. What I have found is 5-40, 10-40, 10-60 and 20-50. All come in regular or sythentic. Any advice would be greatly appreciated.

Wayne

[Nautiquehunter]

I would go with the 20w50 at those temps you need the higher viscosity. I only use synthetic oil if all my engines.

[AirTool]

Curious...what is the water temp? That probably governs more.

Watch your oil pressure...in general you should have about 10 psi of pressure per 1000 rpm. (maybe 15 minimum at idle.)

If too low, need heavier weight.

If too high, need lower weight.

If your cold/start up pressure is over 60 psi and your hot temp is okay, you might want to come down from the 20w to a 10w or switch to a straight 30. In either case, you should be careful reving your engine until the oil heats up a bit and thins out.

[maxpower220]

Your engine operates at a temperature determined by your thermostat. Unless you water temp is above 140 degrees (which it is not), that is not an issue. 10-40 is the closest to the recommended oil that you listed. That is the oil that I would use. Also, if you check other boat engine makers for their specs, you will find that 10-40 is the most common oil for marine engines.
I am very leary of using the gauges to determine the exact oil pressure. Gauges on boats are only so accurate, as long as the reading is consistant, day to day, and in the normal range, you should be good.

[jeffersw]

Sorry for the late reply as the internet has been down due to a fiber cut.

Airtool- Right now the water temp is 105F

Maxpower - Thanks for the input. I purchased the 10-40 Synthetic yesterday and am going to give that a try. I'll watch the gauges and make sure that everything looks good.

Thanks all for the imput...

[shag]

105 degree water?! Holy sh!*!

[jeffersw]

Yeah it's like falling into a jacuzzi. LOL - It does feel better than the 120F + 90% humidity outside temps.