I have a 1997 Jeep Grand Cherokee Laredo Tsi, 4.0 liter, inline 6cyl. Had the engine replaced a few months ago. The "new" engine has about 168K miles.
New sparks and wires about 4000 miles ago.
I put about .5 quarts of Marvel Mystery Oil in the crankcase a hundred miles ago, and put some in the fuel tank, as well. (I have read the back and forth threads about MMO vs. AutoRX. ARX might be an awesome product, but I need to stick to something I can afford. Money is tight.)
Question: I normally run Valv Maxlife blend, 5w30. For my upcoming OCI, I want to put a full quart of MMO in, so I will substitute 1 quart of oil. I've read MMO can thin out the oil a little.
Should I put Maxlife blend 10w30 in so it's a little thicker?
What is the next step up as far as a "thicker" viscosity? ("Thicker viscosity" probably isn't the right way to say it.)
Is 10w40 the next step past 10w30?
I want to change as few things as possible, so if there is an issue it will be easier to troubleshoot.
I don't consider any of these products (engine cleaners) to be miraculous, though I'm sure they work well. Replacing my engine was a huge amount of $$. I figure if I use MMO (or something similar) every OCI, or every other OCI, and maybe in the gas tank once a month, even if it keeps parts of the engine only 10-15% cleaner than it would be otherwise, that's a win. An extra $6 per OCI and extra $6 once a month in the gas tank is worth it if it allows me to go as long as I can before replacing parts, avoiding knocks, pings, etc.
If you think there's a better engine cleaning product, please let me know (as long as it isn't an MMO vs. ARX shootout.)
Thoughts?
Thank you in advance if you have time to answer.
New sparks and wires about 4000 miles ago.
I put about .5 quarts of Marvel Mystery Oil in the crankcase a hundred miles ago, and put some in the fuel tank, as well. (I have read the back and forth threads about MMO vs. AutoRX. ARX might be an awesome product, but I need to stick to something I can afford. Money is tight.)
Question: I normally run Valv Maxlife blend, 5w30. For my upcoming OCI, I want to put a full quart of MMO in, so I will substitute 1 quart of oil. I've read MMO can thin out the oil a little.
Should I put Maxlife blend 10w30 in so it's a little thicker?
What is the next step up as far as a "thicker" viscosity? ("Thicker viscosity" probably isn't the right way to say it.)
Is 10w40 the next step past 10w30?
I want to change as few things as possible, so if there is an issue it will be easier to troubleshoot.
I don't consider any of these products (engine cleaners) to be miraculous, though I'm sure they work well. Replacing my engine was a huge amount of $$. I figure if I use MMO (or something similar) every OCI, or every other OCI, and maybe in the gas tank once a month, even if it keeps parts of the engine only 10-15% cleaner than it would be otherwise, that's a win. An extra $6 per OCI and extra $6 once a month in the gas tank is worth it if it allows me to go as long as I can before replacing parts, avoiding knocks, pings, etc.
If you think there's a better engine cleaning product, please let me know (as long as it isn't an MMO vs. ARX shootout.)
Thoughts?
Thank you in advance if you have time to answer.