I have a vehicle over 80k. I was looking at synthetics. The ones I have narrowed it down to are Mobil 1 High Mileage Synthetic, Valvoline Maxlife Fully Synthetic and Supertech Synthetic. Any opinions?
M1HM vs. VMaxHMFS vs Supertech Synthetic
- Thread starter cjohns79ut
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Is it losing oil? Why those HM's? I would try to find an oil that is put on sale at the auto stores. If it has to be a HM oil try a conventional that is on sale quite often like Castrol, Valvoline, Pennzoil. Walmart is a lousy place to buy oil nowadays.
All of those choices are OK if you need them. Some like M1 others like Valvoline, and SuperTech is fine too I am sure.
All of those choices are OK if you need them. Some like M1 others like Valvoline, and SuperTech is fine too I am sure.
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I'm afraid to run regular synthetic oil that's why I chose high mileage above 75k
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OCI every 3-4 k. Heard too many horror stories about engines using oil once switched over to synthetic.. I drive short distances daily is the main reason of using synthetic
Have 114000 on my 2003 silverado. Just changed to Supertech 5w-30 synthetic after running dino. Runs like a top, no issues and I notice it starts little easier as temp is starting to drop around here.
Originally Posted By: cjohns79ut
OCI every 3-4 k. Heard too many horror stories about engines using oil once switched over to synthetic.. I drive short distances daily is the main reason of using synthetic
Older issues, with older formulations of synthetic. So, more of an old wives tale at this point.
Switch to a synthetic or High-mileage, top-off the initial loss(if any) from the initial switch. You're not going to start going through quarts and quarts of oil loss. If anything, maybe a quart over 3,000 initially(at most), but things do settle down.
Not a bad idea to stay with 3-4 thousand initially on synthetic, since it will probably do 'some' sort of cleaning, but after 10,000 on synthetic you can easily go at least 5,000 miles(7,500 as a cap depending on conditions) at the very least, IMO.
The sweet spot for most oils/engines seem to be between 3,000-6,000 miles. So really, especially swapping to synthetic, draining the oil between 3,000-4,000 is right when it's just gotten to it's best. At 'that' point, you have quite a while before the oil 'wears out'.
DISCLAIMER: This is under the assumption that the engine/application you are speaking of is in generally sound order(no malfunctions etc). Make sure to check that PCV valve on all of your apps, folks!
OCI every 3-4 k. Heard too many horror stories about engines using oil once switched over to synthetic.. I drive short distances daily is the main reason of using synthetic
Older issues, with older formulations of synthetic. So, more of an old wives tale at this point.
Switch to a synthetic or High-mileage, top-off the initial loss(if any) from the initial switch. You're not going to start going through quarts and quarts of oil loss. If anything, maybe a quart over 3,000 initially(at most), but things do settle down.
Not a bad idea to stay with 3-4 thousand initially on synthetic, since it will probably do 'some' sort of cleaning, but after 10,000 on synthetic you can easily go at least 5,000 miles(7,500 as a cap depending on conditions) at the very least, IMO.
The sweet spot for most oils/engines seem to be between 3,000-6,000 miles. So really, especially swapping to synthetic, draining the oil between 3,000-4,000 is right when it's just gotten to it's best. At 'that' point, you have quite a while before the oil 'wears out'.
DISCLAIMER: This is under the assumption that the engine/application you are speaking of is in generally sound order(no malfunctions etc). Make sure to check that PCV valve on all of your apps, folks!
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