what oil (crankcase) for '90 4.3 L v6 mercruiser?

[gardenstatesurfer]

guys,<br /><br />dont kill me here....i have ordered a manual today and am away from my boat for the day. i wanted to pick some oil up on my way home so...<br /><br />which oil (brand and weight/viscosity) do you guys recommend?<br /><br />thanks,<br />dave

 

[vipzach]

Re: what oil (crankcase) for '90 4.3 L v6 mercruiser?

I personally use Mobile 1 10w30. I have a 3.0, don't know if that will make a difference though. I would guess that you would be fine with a straight 30 or 10w30.

 

[Laddies]

Re: what oil (crankcase) for '90 4.3 L v6 mercruiser?

In summer heat we use 40 HD in every thing, here we go

 

[boatguy19]

Re: what oil (crankcase) for '90 4.3 L v6 mercruiser?

i use mercs 25-40 oil, i have a 4.3 also.im sure you will here about every oil thats out there.

 

[jeff13601]

Re: what oil (crankcase) for '90 4.3 L v6 mercruiser?

I use 30, have a friend who uses 10-30 and another that uses 40. If you have any compassion for people at all you will delete this post. lol.

 

[gardenstatesurfer]

Re: what oil (crankcase) for '90 4.3 L v6 mercruiser?

im surprised by the variety. but regular auto oil is fine?, i dont need any marine specific brand.....i know its just a car engine in there but just checking......

 

[Ralph 123]

Re: what oil (crankcase) for '90 4.3 L v6 mercruiser?