Originally Posted By: deven
Originally Posted By: fredfactory
How much top-off oil did you use? Makes a big difference in keeping acids down, which is mostly what degrades oil,
1 quart of make up oil last added in September. Hasn't used any since then.
Thats not much. Which is good news, and bad news I think! Good news of course the rings etc. are tight, bad news is that the additives gradually break down chemically. For that I'd definitely throw in some Liqui Moly Motor Protect half dose with their Motor Saver half dose.
On going long (oil change intervals), Peyton Manning can complete that pass to 30,000 miles if you have good filtration. There are two large government (police, pool cars, etc.) fleets that I have spoken to lately that go 30,000 miles or 2 yrs, whichever comes first, on oil changes. They add make up oil and use great oil filters and simply change the oil filters-only at 10,000 miles, then change all the oil at that 30k or 2 yrs point whichever comes first, and its usually the 30k that comes first.
One of the fleet has 900 vehicles and they have been doing this for 5 years now on the cheapest recycled re-refined conventional motor oil, although they said they are using dexos1 in the GM vehicles now. The other fleet is almost 1,000 vehicles and they use Mobil1 5w-30 for the long 30,000 mile intervals, like the other fleet also changing great filters out at 10,000 miles.
Neither fleet puts in extra additives. Relying on makeup oil to keep acids down.
Originally Posted By: fredfactory
How much top-off oil did you use? Makes a big difference in keeping acids down, which is mostly what degrades oil,
1 quart of make up oil last added in September. Hasn't used any since then.
Thats not much. Which is good news, and bad news I think! Good news of course the rings etc. are tight, bad news is that the additives gradually break down chemically. For that I'd definitely throw in some Liqui Moly Motor Protect half dose with their Motor Saver half dose.
On going long (oil change intervals), Peyton Manning can complete that pass to 30,000 miles if you have good filtration. There are two large government (police, pool cars, etc.) fleets that I have spoken to lately that go 30,000 miles or 2 yrs, whichever comes first, on oil changes. They add make up oil and use great oil filters and simply change the oil filters-only at 10,000 miles, then change all the oil at that 30k or 2 yrs point whichever comes first, and its usually the 30k that comes first.
One of the fleet has 900 vehicles and they have been doing this for 5 years now on the cheapest recycled re-refined conventional motor oil, although they said they are using dexos1 in the GM vehicles now. The other fleet is almost 1,000 vehicles and they use Mobil1 5w-30 for the long 30,000 mile intervals, like the other fleet also changing great filters out at 10,000 miles.
Neither fleet puts in extra additives. Relying on makeup oil to keep acids down.