I was looking over some of the values of various oils trying to decide what oil to use for my cars in order to do a little cleaning of old stuff left behind by other oils. I used to take my car to a local shop who just used the cheapest stuff he could get and i ran my oil a bit longer than I prob should have 5k... Anyway I noticed that Calcium is usually representative of cleaning power and the PP PUP and Pennzoil Conventional all have high numbers of it but what was interesting is Quaker State Ultimate Durability Quaker State Synthetic has a decent number and is a great price. Any reason why it wouldn't clean almost as well as PP? I know dispersal like Magnesium is important too but it is not bad either. Quaker State Ultimate Durability 10w30 2,411 calcium and 8 mag compared to PP 2,600 cal and 13 mag. compare this still to Mobil 1 1,161 cal and yes 689 mag but that says it is not as solid on cleaning but it is killer on dispersal of new forming junk. Am I correct in my assumptions here?
Calcium the main thing for cleaning?
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You could switch it up and use some Valvoline in conventional, Durablend, High Mileage or SynPower. Ashland uses a secret add pack that keeps engines clean and produces some great used oil analysis.
Ashland uses sodium in the add-pack as a detergent.
Ashland uses sodium in the add-pack as a detergent.
Originally Posted By: mongo161
You could switch it up and use some Valvoline in conventional, Durablend, High Mileage or SynPower. Ashland uses a secret add pack that keeps engines clean and produces some great used oil analysis.
Ashland uses sodium in the add-pack as a detergent.
+1 Lubrizol additive packages i believe.
You could switch it up and use some Valvoline in conventional, Durablend, High Mileage or SynPower. Ashland uses a secret add pack that keeps engines clean and produces some great used oil analysis.
Ashland uses sodium in the add-pack as a detergent.
+1 Lubrizol additive packages i believe.
Theres about 50 things in the oil we can't see in a VOA/UOA, so it's hard to say.
Quaker State Ultimate Durability is an excellent oil, use it with confidence. SOPUS really doesn't make a bad oil. No matter what anyone says Mobil 1, Pennzoil Platinum, Quaker State Ultimate Durability, and Valvoline are all excellent is that clean very well. Yes, technically one must clean better than the rest, but they're all excellent. So use which ever one you like best and your engine will be clean and well protected.
Page 256 of http://cdn.intechopen.com/pdfs-wm/21936.pdf has a discussion of detergents and dispersants.
Jake777, if I understand you right, you're correct saying that synthetics lay down less oxidized base-oil junk per mile than cheaper oils out there. Overbased calcium sulfonates are very effective in fighting acid formation and act as detergents, so a lot of that is good in that way. I've seen tech papers where those calcium compounds do reduce effectiveness of anti-wear additives though, so you can't put a lot in oil.
Jake777, if I understand you right, you're correct saying that synthetics lay down less oxidized base-oil junk per mile than cheaper oils out there. Overbased calcium sulfonates are very effective in fighting acid formation and act as detergents, so a lot of that is good in that way. I've seen tech papers where those calcium compounds do reduce effectiveness of anti-wear additives though, so you can't put a lot in oil.
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...may also cause LSPI in T-GDI application.
http://papers.sae.org/2014-32-0092/
'...In this study, abnormal combustion experiments were conducted to investigate the effect on autoignition of a calcium-based additive that is typically mixed into engine oil to act as a detergent. The experiments were performed with a single-cylinder 4-cycle gasoline engine using a primary reference fuel (PRF 50) into which the calcium salicylate (CaSa)-based detergent was mixed at various ratios.
The experimental results showed that autoignition occurred increasingly earlier with a higher concentration of the CaSa-based engine oil additive, giving rise to severe abnormal combustion. This indicates that the addition of a CaSa-based detergent to engine oil tends to promote autoignition and abnormal combustion...'
http://papers.sae.org/2014-32-0092/
'...In this study, abnormal combustion experiments were conducted to investigate the effect on autoignition of a calcium-based additive that is typically mixed into engine oil to act as a detergent. The experiments were performed with a single-cylinder 4-cycle gasoline engine using a primary reference fuel (PRF 50) into which the calcium salicylate (CaSa)-based detergent was mixed at various ratios.
The experimental results showed that autoignition occurred increasingly earlier with a higher concentration of the CaSa-based engine oil additive, giving rise to severe abnormal combustion. This indicates that the addition of a CaSa-based detergent to engine oil tends to promote autoignition and abnormal combustion...'
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