CarQuest Full Synthetic 5W-30

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  #1  
Old 12-31-13, 08:25 AM
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CarQuest Full Synthetic 5W-30

I've read here most suggest using synthetic in my Toro 824. Picked up a couple quarts yesterday and was surprised it was so cheap, $8.96 for the two.

This good enough or should I return them and get Mobile 1? For some reason I always thought synthetic was like ten bucks a quart.

Thanks
 
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Old 12-31-13, 09:26 AM
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I don't normally run full synthetic but I have noticed that the prices seem to have come down some. Store brands are always cheaper than the name brands and often just as good although I don't think I've ever used any CarQuest oil.
 
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Old 12-31-13, 10:07 AM
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I was told CarQuest oil is Valvoline so I use that in my car and truck, not sure about the synthetic though. Guy at the counter didn't much seem to care.

I use Cabelas semi-synthetic in my outboard, not sure what the difference is between semi and full. Guess I'll have to look it up.

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  #4  
Old 12-31-13, 12:53 PM
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Walmart's Supertech is Quaker State/Penzoil. The store brands try to hide these facts but I figured that one out by reading a material safety data sheet.

Let's face it. CARQUEST is not an oil company, nor is walmart. I don't know of too many small flaky oil companies anymore so whatever brand of oil you have you can be sure it is manufactured by a large, very well known oil company. At least today it is.

I would also imagine that it would be cheaper for these large oil companies to just take the large batch of brand name oil they manufacture for themselves and put it into the store brand containers, then it would be to change the formulation
 
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Old 12-31-13, 01:37 PM
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....you can be sure it is manufactured by a large, very well known oil company.

Yeah, I think you're right there. If it warms up a little I'll put the synthetic in and see how it goes. Thanks.

Found a pretty good article on semi vs full synthetic oils:


Engine oil -- Conventional, synthetic or semi-synthetic blend? What's the correct engine oil for your customers' vehicles? - Automotive Service Professional
 
  #6  
Old 12-31-13, 03:35 PM
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...noticed that the prices seem to have come down some.

No kidding! Last time I looked at synthetic was back around 1975, Amsoil I think, and it was so crazy expensive I never thought again about using it till reading it would be good for my snowblower.

I'm now thinking about putting it in my 89 K1500 with 134k but with leaking valve guides it might not be a good idea.

We'll see.
 
  #7  
Old 01-01-14, 05:48 AM
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I've been running Valvoline's hi mileage semi-synthetic in my wife's merc for the last 70k [has 170k] and haven't had any issues. Her car is usually down about 1/2 quart when it's time to change the oil but she does have a lead foot and there is a small leak I've not been able to find
 
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