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Author Topic: SL3 engine oil viscosity  (Read 3529 times)

seacommander

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SL3 engine oil viscosity
« on: April 20, 2011, 09:53:33 PM »
As far as I can discover, Lister recommended an SAE10W oil for the SL3 under prevalent conditions in countries such as the UK. This seems mighty thin for a straight oil, especially when hot. What do forum members think. Any recommendations for alternatives?
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Ratman

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Re: SL3 engine oil viscosity
« Reply #1 on: April 20, 2011, 10:53:30 PM »
I'd go for 15/40 mineral, or 10/30 if you can get it. Oil has come on a long way this past fifty years. 
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dieselgman

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Re: SL3 engine oil viscosity
« Reply #2 on: June 10, 2011, 05:54:04 PM »
15/40 CD rated oil should be fine for that engine. The only time we stay with straight weight oils is during break-in when we use a non-detergent variety and then usually 30wt.. Winter cold-starting would be another issue altogether though. The multi-weight oils are very effective for this type of service.

dieselgman
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seacommander

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Re: SL3 engine oil viscosity
« Reply #3 on: July 20, 2011, 09:43:27 PM »
Thanks to you both for the suggestions. Much appreciated.
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