Synthetic oil within any given SAE viscosity grade has much better cold flow properties than conventional oil.
There is NOTHING wrong with that statement. Nothing miraculous. Just the truth. Will the difference help your car start when cold? YES.
Will conventional 5W-30 cause your car to not start in the same cold weather? Probably not.
There is NOTHING wrong with that statement. Nothing miraculous. Just the truth. Will the difference help your car start when cold? YES.
Will conventional 5W-30 cause your car to not start in the same cold weather? Probably not.