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 Post subject: Can you use 15w 40 instead of 30 weight oil
PostPosted: 01 Apr 2019 21:08 
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Navigator

Joined: 25 Apr 2016 10:25
Posts: 90
I am currently traveling down the Baja coast of Mexico and have stopped in ensenada. I have gone to multiple stores to see whether they had some 30 weight engine oil but none of them carried it. Is it okay to use 15w 40? What would the consequences be of using it?


 
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 Post subject: Re: Can you use 15w 40 instead of 30 weight oil
PostPosted: 02 Apr 2019 06:28 
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Tactictian

Joined: 16 May 2009 08:06
Posts: 132
It would surprise me if the multi weight oil had a bad effect on the motor. I also have a 40 year old motor cycle and the thing we have to avoid is synthetic oil. Whatever the reason, it gets past the oil seals and causes leaks. I don’t know if the 40 year old Westerbeake shares that issue but I wouldn’t take a chance.


 
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 Post subject: Re: Can you use 15w 40 instead of 30 weight oil
PostPosted: 02 Apr 2019 18:31 
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Skipper

Joined: 29 Dec 2006 09:38
Posts: 522
I always used 15-40 instead of 30 wt. Just make sure that it is diesel type oil. CD is the designation. You should be able to buy this all the way through Central America.
Ray Durkee
T 37 #373


 
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 Post subject: Re: Can you use 15w 40 instead of 30 weight oil
PostPosted: 04 Apr 2019 07:43 
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Skipper

Joined: 21 Oct 2006 18:12
Posts: 259
Westerbeke told me that 15W40 is good for our old engines

Richard


 
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 Post subject: Re: Can you use 15w 40 instead of 30 weight oil
PostPosted: 25 Apr 2019 12:12 
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Navigator

Joined: 25 Apr 2016 10:25
Posts: 90
Great. That makes things much easier. I was able to find some SAE 30 in Cabo so I picked up a jug.


 
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