What non-synthetic (conventional) car oil would you guys recommend?

Question

I use Mobil Clean 5000 right now. The UOA's(Used Oil Analysis) on bobistheoilguy.com are not sufficient enough to give me good data. I really doubt Mobil would make a bad oil. The car runs wonderfully with it, and I drive 70% highway miles so there's no "severe" driving for me to worry about with shorter OCI's(Oil Change Intervals). I particularly like the 5000 mile guarantee. I use purolator oil filters only. My car is a 1991 Toyota Camry, so I don't use synthetic. Older engines like this one don't seem to be designed for synthetic oil from what I hear. (The car engine needs an overhaul because it does some slight oil burning, which is my other question here that has already been resolved) I was just wondering if for example someone drives the same car as I do, and has a lot of miles like I do (228,700). I just want to keep this car running as much as I can until I need to overhaul the engine. So what's your favorite conventional oil?

dodge man: I tried synthetic once, but my oil burning increased a good deal. I guess I could try a heavier level synthetic, I haven't tried that before. I know for a fact that synthetic oil is much better and maybe I will give it another try. I can't help but notice your extreme amount of best answers and the fact that you are a certified mechanic. Have you ever worked with this engine before? I was only wondering. But considering your advice I will probably try synthetic again. I used 10W-30 synthetic but the oil pressure was low, I believe due to increased clearances from engine wear. I guess I should try a 10W-40 synthetic.

The guy who had my car before me really didn't take care of it, I really did all the maintenance work I'm capable of to keep the car running well. (Transmission fluid/filter change, added a Tranny cooler, religious oil changes, new struts, tires, brakes, cv axles, timing belt, spark plugs...)

I know conventional oil has increased in quality by leaps and bounds the past 20 years. That's great for all of us. It seems like it doesn't matter as much what oil you use. I just like the Mobil Clean 5000's guarantee that I can change oil every 5000 miles.

Answer 1

i own a repair shop,and synthetic is designed to run in older engines and help them also,my service truck has over 200 thousand on it,and it runs synthetic in it,and it does real good with it i would stay with Mobil one as an oil or Pennzoil i have used it before and i like it a lot,it does real good in any vehicle you put it in,, it or Mobil one is the only oil i ever use and i never have any complaints from any of my customers on any of it,good luck i hope this help,s.

Answer 2

Car dealers, snake oil salesmen, politicians, all the same. They should use the same oil as specified by the manufacturer. In the case of a 5w20 synthetic blend then that's what they should use. If it's a car that takes 5w30 or 10w30 or 10w40 (Volvo) then they will use the oil specified but they may ask you if you want a synthetic or semi-synthetic oil. A guy I knew in the Marines grew up working in his fahers shop in New Jersey and he told me they would buy the cheap oil in 55 gallon drums and slap Valvoline stickers on the drums to fool any curious customers. Most shops these days have large oil tanks of several hundred to several thousand gallons. They call this "bulk oil" since it isn't in pretty bright colored plastic bottles. It all comes out of million gallon tanks in a fuel farm somewhere and is bottled and shipped to a store or moved by tanker truck to a shop storage tank. Good Luck!

Answer 3

Castrol GTX or Valvoline Racing oil 20-50w :)

Answer 4

Mobil is good.chevron is good..castrol is good...there all about the same

or oil from the cars manufacturer.

Answer 5

I use castrol have been for many years 250,000 miles still going strong

Answer 6

castrol,valvoline...all name brands are very good nowadays

Answer 7

I don't own a repair shop.VALVOLINE is the best I have found.