Oils
Instructor
Joined: Jul 2017
Posts: 141
Likes: 22
From: Newark Delaware
I haven't tried it, but there is no way I'd leave oil in a car that's used, even sporadically, for a year.
There really isn't a wrong answer to the type of synthetic oil to use as they all have such great properties to have them last far longer (without turning to sludge) than conventional non-synthetic oil. I've personally been using Castrol Synthetic for nearly 30 years and while I used to change every 3000, I'm now going closer to 5000 (on my daily drivers) simply because of cost.
There really isn't a wrong answer to the type of synthetic oil to use as they all have such great properties to have them last far longer (without turning to sludge) than conventional non-synthetic oil. I've personally been using Castrol Synthetic for nearly 30 years and while I used to change every 3000, I'm now going closer to 5000 (on my daily drivers) simply because of cost.
Team Owner
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From: Hartford WI
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Thread Starter
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From: Windsor Connecticut
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Melting Slicks
Joined: May 2013
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From: Sacramento California
It is true, any name brand synthetic oil will work fine. Synthetics handle high temperatures better than conventional oils and generally last longer (all things being equal).
High mileage variety would be a good idea, they have more of the zinc and other high pressure friction fighters needed in the flat tappet valvetrains. (80,000 is not high mileage unless they were done 1/4 mile at a time -- these motors last a long time if taken care of.)
For the weight, keep it between a 5w30 and 10w40 or anywhere in between. The Mobil 1 0w40 suggested by Cjunkie is an excellent oil (European spec) although I don't think it's available in high mileage variety.
High mileage variety would be a good idea, they have more of the zinc and other high pressure friction fighters needed in the flat tappet valvetrains. (80,000 is not high mileage unless they were done 1/4 mile at a time -- these motors last a long time if taken care of.)
For the weight, keep it between a 5w30 and 10w40 or anywhere in between. The Mobil 1 0w40 suggested by Cjunkie is an excellent oil (European spec) although I don't think it's available in high mileage variety.
Team Owner
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From: Hartford WI
Instructor
Joined: Jul 2017
Posts: 219
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From: Long Island NY
Very true. Though I never sent out oil for analysis, 5 years ago I had a 91 s10 with 185k on it. It had a sticky lifter on cold days. I bought castrol on sale one time and the valve train was so much louder and that lifter made noise for a longer amount of time. Went back to pensoil and it everything was so much better. With that said, all my vehicles currently get Mobil 1 or Mobil 1 extended performance. (wichever is on sale at Auto Zone)
I change the oil in the vette every 3k, but go to 4 to 5k on my Silverado and wife's Traverse.
I change the oil in the vette every 3k, but go to 4 to 5k on my Silverado and wife's Traverse.