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What oil? #5433068 05/19/20 08:21 AM
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IvanPletex Offline OP
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Hi, what oil would be the best for the small diesel engine with chain as timing belt?
For now I am using shell helix ultra diesel 5w40, but that oil has low viscosity at 40°C and 100°C compared to the others( Selenia WR 5w40, Total quartz 9000 energy etc.)
Should I use oil with higher viscosity index and viscosity at 40°C, 100°C ?
Does higher viscosity means more protection and shear stability or not?
What would you recommend?

Last edited by IvanPletex; 05/19/20 08:24 AM.
Re: What oil? [Re: IvanPletex] #5433106 05/19/20 08:55 AM
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CT8 Offline
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What specs does the owners manual recommend for that particular engine?


2015 F150 2.7
2018 F350 6.2
Re: What oil? [Re: CT8] #5433113 05/19/20 09:03 AM
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IvanPletex Offline OP
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SAE 5w40, ACEA B4

Last edited by IvanPletex; 05/19/20 09:17 AM.
Re: What oil? [Re: IvanPletex] #5433195 05/19/20 10:33 AM
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CT8 Offline
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That is a common spec. Oils from the major oil companies would be a safe bet.


2015 F150 2.7
2018 F350 6.2
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