type of oil

What type of oil for a 1600cc engine? I have asked 3-4 people & received as many different answers.

10W-30 Winter

20W-50 Summer

You need it thinner in the Winter for easier starting and thicker in the Summer for better cooling (remember - a big part of cooling these engines is with the oil).

gn

So unless you were TX/FL/AZ then 10W40 would be a good all around weight that would save stocking multiple viscosities?

There are several strings with discussions about the best choices for lubrication. They discuss the pros and cons of synthetic vs. real oil and the best viscosity for different temps. and driving conditions.

For more complete answers to your question try the search feature using Synthetic, Oil, Lubrication, etc. as your "key words".