synthetic switch
- Thread starter kilkm68
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Grade for grade, synthetics are not 'thinner' than conventional oils.
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It will most likely burn a fair bit of oil and turn dark very quickly the first couple oil changes.
Synthetic are great.
Synthetic are great.
Shouldn't be an issue. It might clean out some junk, so expect darker oil at first, as stated by rando.
Originally Posted By: kilkm68
Is there any concern switching an older motor raised on dinosaur oil to a synthetic. I' be always heard the thinner synthetics will leak thru the older gaskets.
Some synthetics clean very well and if an old engine has oil seals and gaskets that are partly helped to function by a layer of varnish, then you can start an oil leak or increase the oil consumption. If the engine has a high oil consumption or leaks, then a major brand High Mileage oil might be a better idea. Keep the first OCI short just in case it dissolves a lot of crud.
Is there any concern switching an older motor raised on dinosaur oil to a synthetic. I' be always heard the thinner synthetics will leak thru the older gaskets.
Some synthetics clean very well and if an old engine has oil seals and gaskets that are partly helped to function by a layer of varnish, then you can start an oil leak or increase the oil consumption. If the engine has a high oil consumption or leaks, then a major brand High Mileage oil might be a better idea. Keep the first OCI short just in case it dissolves a lot of crud.
Originally Posted By: kilkm68
Is there any concern switching an older motor raised on dinosaur oil to a synthetic. I' be always heard the thinner synthetics will leak thru the older gaskets.
Done it more than a couple times. You will likely see some consumption the first two oil changes, which should then taper off.
Is there any concern switching an older motor raised on dinosaur oil to a synthetic. I' be always heard the thinner synthetics will leak thru the older gaskets.
Done it more than a couple times. You will likely see some consumption the first two oil changes, which should then taper off.
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It will most likely burn a fair bit of oil and turn dark very quickly the first couple oil changes.
This has been experience as well. I have a 97 Dodge Ram with 195k miles. It had nothing but Castrol GTX in it from day one. Awhile back I switched to Pennzoil Ultra. First oil change, I was down a quart after about 2k miles. The second change, at around the same I was down about half a quart. I'm on my third oil change with Ultra and after almost 3k miles only down about 1/4 of a quart, maybe less. No oil leaks so far either.
It will most likely burn a fair bit of oil and turn dark very quickly the first couple oil changes.
This has been experience as well. I have a 97 Dodge Ram with 195k miles. It had nothing but Castrol GTX in it from day one. Awhile back I switched to Pennzoil Ultra. First oil change, I was down a quart after about 2k miles. The second change, at around the same I was down about half a quart. I'm on my third oil change with Ultra and after almost 3k miles only down about 1/4 of a quart, maybe less. No oil leaks so far either.
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