4 stroke oil?

**jlawhorn** · 10-31-2006, 08:19 AM

I run a yamaha 90 hp 4 stroke motor. I have used yamalube 4 stroke oil 10w30 on previous oil changes. Does anyone know if a regular 10w30 oil would protect the same say a havoline or other brand. Just thinking of cost effectiveness and the ease of purchase, about an hour drive to my local dealer.

**Jerry Blake** · 10-31-2006, 09:06 AM

I use Castrol in my Suzuki 140hp 4-stroke.

**HOTSPOT** · 10-31-2006, 10:12 AM

I use Castrol in my Yamaha F200.

**Darryl Morris** · 10-31-2006, 05:20 PM

Castrol 20w50 purchased from Walmart or parts store. This weight more for the high performance type engine.

**ShilohRed** · 10-31-2006, 06:01 PM

I use Castrol in my Yamaha and Suzuki.
Pete

**gcromer** · 10-31-2006, 09:15 PM

Mobil 1

.. 10W- 30 in my 2002 Yamaha 40 since the third oil change...

Gerald K4NHN
Cayce, SC

**Bluegillfreak** · 11-01-2006, 11:00 AM

I would run either 20 50 castrol or 10 30 synthetic castrol

**crome** · 11-01-2006, 04:07 PM

there are differences between oils designed to run in automobil engins and 4-stroke outboards,so i just stick with yamalube.i take my own jugs and have them filled from the dealer and it's a lot cheaper that way.

jerry

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