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You can use Lucas oil treatment in just about any type of oil. I use it with Valvoline high mileage.
Pennzoil High Mileage conventional oil.
I recommend a high mileage oil such as Pennzoil High Mileage in the weight the manufacture of the vehicle recommends.
SAE 10w30 high mileage oil. Most major brands maker a high mileage oil. I personally use Pennzoil in my Toyota Tacoma with 130,000 miles on the ODO.
I would recommend SAE 10w30 if you drive in temperatures above zero. Below 0 use SAE 5w30. Pennzoil makes a high mileage oil that may be of benefit. I use it in my Toyota that has 125,000 miles on the odometer.
All major brands are excellent. If your Camry has over 100,000 miles on the ODO I recommend you use a High Mileage oil. I personally use Pennzoil High Mileage SAE 5w30 in my Toyota Truck with 135,000 miles. It does not use one drop of oil and runs perfectly. Just make sure you use the correct weight that is recommended by Toyota.
I've been happy with Pennsoil 10w-40. If the engine has high mileage, Lucas oil stabilizer will give it some of its "zip" back.
15 year old car? I'd go up to a High-mileage 10W-40 and stick in 20 percent Lucas oil additive.Phil
A high mileage 10w30A high mileage 10w30
It depends on the car make Most of the cars 100,000 miles is a high mileage For some cars as Mercedes, BMW, Volvo 150,000 miles is a high mileage Alaa Farag
There are several advantages of using Pennzoil Motor Oil. These benefits include help prevent sludge and other damaging deposits, provides proven wear protection, and controls high temperature oxidation.
Average mileage per year is 10-14,000 on a vehicle, so more than this would be high mileage.