Volvo AWD 850 Forum

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Is 15W-40 too heavy for a 850 5 cylinder engine for summer-time hwy usage?? Please help 850

posted by  someone claiming to be 777 on  Sat May 12 09:57 CST 2007 [RELATED]

Greetings:


Is 15w-40 (chevron delo 400) too heavy for this 850 5 cylinder engine? Will the ports be clogged?








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Is 15W-40 too heavy for a 850 5 cylinder engine for summer-time hwy usage?? Please help 850

posted by  KlausC on  Sat May 12 17:07 CST 2007
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last visit: Fri Oct 24 10:15 CST 2014
[RELATED]

No, it is not too thick if the ambient temp is around 100F. Check your owner's manual and you will find that 10W30 is just fine, especially highway driving.

You gas milage will suffer a little, and any prolonged "errand" driving (not getting the engine oil hot) will cause sludge.

Klaus







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Is 15W-40 too heavy for a 850 5 cylinder engine for summer-time hwy usage?? Please help 850

posted by  someone claiming to be 777 on  Sat May 12 11:17 CST 2007 [RELATED]

I usually use havoline 10w-30. My current mileage is about 171,000 or so original miles. tHE CAR IS A NON-TURBO 850 GLT Wagon. I am just looking for that extra protection, during the summer heat waves (99% hwy mileage). My 740 wagons (several) 430,000/500,000 plus original miles what a stout engine!








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Is 15W-40 too heavy for a 850 5 cylinder engine for summer-time hwy usage?? Please help 850

posted by  1sciroccofahrer on  Thu May 17 04:46 CST 2007
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last visit: Sat Mar 8 19:17 CST 2014
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My parents have always used 20/50 Valvoline in their Volvos dating all the way back to '75, and have never gotten anything less than 350k out of their engines. I should add that their Volvos live in a rather warm, if not outright hot, area of California. Have a most brillant day :)







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