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I rechecked the schedule for oil change and discovered it to…

I rechecked the schedule for...
I rechecked the schedule for oil change and discovered it to be time again. I am using 15 k filters and Castrol oil. The oil is dark so I am thinking to shorten the 7500 interval to 5000 between changes. Also would it be a good idea to continue using rislone to aid in cleaning the engine and maintaining lubricity and viscosity
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Answered in 1 hour by:
1/21/2018
Don
Don, ASE Certified Technician
Category: Car
Satisfied Customers: 1,746
Experience: 30 years journeyman experience on classic cars
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hi there my name is don i will help you on this

what grade of oil are you using also is it synthetic ?

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Customer reply replied 7 months ago
5w30,full synthetic

Hi there thanks for that great information

i have been a mechanic for over 40 years . all my vehicles use fully synthetic oil 5W30

i change my oil and filter always at 5000 kilometers or 3000 miles

i have one vehicle i just retired it had almost 1 million miles on it the reason i retired it was because the body was rotted away the engine still purred like a kitten and the oil only turned to a light brown in color and i never used any oil between oil changes plus it pulled a 27 foot Airstream through the rocky mountains .

the reason i tell you this is this

fully synthetic oil is a high detergent oil it cleans as it lubricates .fully synthetic oil also leaves a thin layer of oil on all the bearings to prevent a dry start up like most standard blends.

so having said that here is your answer

i would indeed shorten the intervals to 5000 or even better 3000 miles you can use a good grade oil filter as well ,you do not need to put the Ristone in the engine the synthetic oil is already cleaning the engine

i look at it this way it costs about 50.00 for an oil change or 2500.00 or more for a motor

oil changes are the cheapest form of maintenance you can get

we live in a very volatile climate where it can change up or down 30 degrees temperature over night we have gone from 32 degrees to -36 in one day with the synthetic oil the car always starts and no knock at all because it was not plugged in

Hope this helps you

have agreat day

Don

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Don
Don, ASE Certified Technician
Category: Car
Satisfied Customers: 1,746
Experience: 30 years journeyman experience on classic cars
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hi there thanks so much for the rating have a great day

Don

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