I have a 2003 Honda Accord 148,000 miles?

Should I get high milage oil when I get oil changed?

Get an electric car

I own a garage in uk… Never heard of high mileage oil! However I would definitely be using fully synthetic oil.MOBIL1 grade 10-40… And in a hot climate 10-50

Yes, High mileage synthetic blend is better as is full synthetic compared to conventional. Btw my 04 Accord always got full synthetic and I had almost 300k miles and it still ran well before someone crashed it.

Yes, I would recommend you switch to High Mileage oil. Also if this is a V6 Accord then you should have had the cam belt and water pump replaced at 110,000 miles. If the belt breaks you will have internal engine damage. Replace it today if you have not already done so. If it is a 4 cylinder it uses a chain that requires no maintenance. Also you Honda requires SAE 5w-20 not 10w-40 or 10w-50 as another posted recommended.

Yeah