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Volvo recommends using a synthetic oils that is 30/5. They have 30/5 oils for vehicles over 150k miles that work just fine.
I have had volvo's for years and have had 4 740's including the one I have now and I use nothing but Castrol 20w50 in all of them, yes even in the winter. Also I have 2 740's now with over 300,000 miles on them.
i know the 1.3 g13bb take a good 10/40w oil
10w30.
Hash oil
5w-30
What it says in the manual
With new oil filter, four quarts.
Get a manual on your car from DISCOUNTAUTOREPAIRMANUALS.COM. there are many seals and some have to be done with the engine out.
What id the oil capacity on a BMW 740IL
It uses 5-30 or 10-30 oil rated SM.
The oil to turbo is from the crank case. period no special reservoir. If you want to change the oil for your turbo simply drain the motor oil. I change my oil & filter on my '93 740 hotted up 3K miles even though Volvo says 5K miles No problems