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wpgskier

Oil for 340 Monsoon ?

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wpgskier

first oil change in my new-to-me 2007 RLXi with the 340 Monsoon.

Spec from manual is 15W40, but I'm having trouble finding it.

Dealer says he uses 25W40 mercruiser oil, but Malibu is a sideline for them so I'm skeptical.

Suggestions ?

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Soon2BV

look in the diesel oil section of the stores.

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Vettesetter

Shell Rotella 15W40

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BoilerUp

Napa carries 15W40 by me. Labeled as diesel engine oil like soon2bv said.

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nuttyskier2002

Valvoline Premium Blue 15W40 available at NAPA!

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Ndawg12

Shell Rotella 15W40

:plus1:

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Steve B.

On my Gen 1 small block, I use Castrol semi synthetic 20W 50. Great stuff.

Steve B.

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Raeden

Mobil Delvac 1 15w40, with Mobil 1 oil filter.

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Murphy8166

My Dealer has been running 20w50 oil for as long as I can remember. I think they use a more viscous oil weight in order to combat the extreme heat we have down here in the summer

I run Valvoline VR-1 Race Oil 20w50 and can usually find it for 5 dollars a quart. Also run a Napa Gold Filter.

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Bill_AirJunky

Napa 15w 40..... made by Valvoline.

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Indyxc

Our yearly thread ..

Vavoline premium blue 15w40 diesel for me. Someone posted that blind study from a couple years ago and it came out to be the best oil judging by anti wear and water stabilizing chemicals.

Edited by Indyxc

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Malibudude

I use Chevron DELO 15w-40.

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gorilla

I "was" running Mobil 1 5w-40 diesel oil, but it was too thin and the motor ate it up pretty quickly. I am now running Mobil 1 15w-50 and really like it. Good oil pressures and good cold flow characteristics. I run synthetic because I run the boat in cold temps and have to winterize it 5-6 times a season. When ever the air temps are good, we put the dry suits on and hit the water.

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CumminsBu

Amsoil SAE 15w- 40 Diesel Marine with Napa gold filters.

Edited by CumminsBu

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dalt1

Shell Rotella 15W40

I buy mine @ Wallmart.

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MalibuAdam

I buy mine @ Wallmart.

me too, cheap

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