I have ran Mobil-1 since 1988 and including high speed driving on Germany's Autobahn and have never seen M-1 come out goopy! trustme when I say that if I couldnot kill M1 driving my BMW or Dad's 4Runner at WOT for long periods of time you sure as heck cannot do it in AMerica on a 2.2. So like the other have said you either have a collant leak or your engine had a ton of deposits.
In fact the last time I saw GOOPY oil was 1992. A friend had a Chevy Corisca given to him. It had the Factory oil filter still on it and about 50,000 miles on the car. They had just been toping it off all those years. So it was two quarts low so I had him add 2 quarts of M1 15W50 and a bottle of B12 Chemtool. We drove it to the Auto Craft Shop at Ft. Stewart which took about 30 minutes of driving. When we drained it I put it on a lift because I was also teaching him how to do brakes and service his transmission which also got M1 that day. So I drained it into a plastic jug to show him all the junk that was in his engine. When I went to put it down the drain "in ground oil tanks at the shop) A gray haired mechanic that worked their asked me "Son how did you get that gear lube to turn so black and get so thick?" When I told him it was engine oil he about fell over.I had to use a knife to get it out of the bottle it was like Ketchup.
So we put 15W50 in it and M1 ATF and I had him cahnge his spark plugs and brakes all at the same time! He said the car drove like new after that. He kept useing M1 after that!
The reason I tell that story is because it is the only time I have seen any real synthetic goop up. It took 50,000 miles of no oil changes just top up's with dino oil+2 quarts of M1 15W50 + 1 bottle of B12 Chemtool and 30 minutes worth of driving! So short of a coolant leak that should tell you how dirty an engine has to be to do that to a decent synthetic. In fact I once saw an engine ran on a dyno for 415 hours with nothing but toping off the oil. They shut it down to do reguired maintence like spark plugs and air filters and the engine was still clean and the oil was not goopy!
In fact the last time I saw GOOPY oil was 1992. A friend had a Chevy Corisca given to him. It had the Factory oil filter still on it and about 50,000 miles on the car. They had just been toping it off all those years. So it was two quarts low so I had him add 2 quarts of M1 15W50 and a bottle of B12 Chemtool. We drove it to the Auto Craft Shop at Ft. Stewart which took about 30 minutes of driving. When we drained it I put it on a lift because I was also teaching him how to do brakes and service his transmission which also got M1 that day. So I drained it into a plastic jug to show him all the junk that was in his engine. When I went to put it down the drain "in ground oil tanks at the shop) A gray haired mechanic that worked their asked me "Son how did you get that gear lube to turn so black and get so thick?" When I told him it was engine oil he about fell over.I had to use a knife to get it out of the bottle it was like Ketchup.
So we put 15W50 in it and M1 ATF and I had him cahnge his spark plugs and brakes all at the same time! He said the car drove like new after that. He kept useing M1 after that!
The reason I tell that story is because it is the only time I have seen any real synthetic goop up. It took 50,000 miles of no oil changes just top up's with dino oil+2 quarts of M1 15W50 + 1 bottle of B12 Chemtool and 30 minutes worth of driving! So short of a coolant leak that should tell you how dirty an engine has to be to do that to a decent synthetic. In fact I once saw an engine ran on a dyno for 415 hours with nothing but toping off the oil. They shut it down to do reguired maintence like spark plugs and air filters and the engine was still clean and the oil was not goopy!