I've also noticed a sudden change in pinging after an oil change, but I don't remember which brands it was. Maybe it depends on how much is getting burned. Would PAO lower the octane rating when mixed with fuel, more than a conventional oil?
Switched from Mobil 1 to Havoline
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I switched to Havoline from Mobil 1 as well in our 2005 Accord.
I was able to buy some Havoline for $1.18 a quart and loaded up. That was probably a once in a lifetime situation, but I can still buy it for another 3 weeks at $1.38 a quart. I will soon have enough for 5-6 years of oil changes.
I'll take that and throw some MMO in every 15,000 miles. I have yet to hear of any problems from a well-maintained Honda engine in the last 25 years anyway.
I was able to buy some Havoline for $1.18 a quart and loaded up. That was probably a once in a lifetime situation, but I can still buy it for another 3 weeks at $1.38 a quart. I will soon have enough for 5-6 years of oil changes.
I'll take that and throw some MMO in every 15,000 miles. I have yet to hear of any problems from a well-maintained Honda engine in the last 25 years anyway.
Pinging possibly = too low compression caused by lack of oil pressure caused by inadequate viscosity caused by too thin a synthetic oil at the 5w vis.
Dino 5w30 or 10w30 would likely see your problems go away. Or if you must go with synthetic, try mobil1 10w30.
If all else fails, get your timing checked.
Dino 5w30 or 10w30 would likely see your problems go away. Or if you must go with synthetic, try mobil1 10w30.
If all else fails, get your timing checked.
Low compression is not caused by a momentary lack of oil pressure, nor does it contribute to the pinging noise from preignition or detonation. OTOH, high compression would contribute to pinging, say in a performance engine, using low octane fuel and no knock sensors to tell the engine ECU to retard timing temporarily.
$1.38 for Havoline, buy all you can because it will only get more expensive in the next few months.
The only reason why I have 60 quarts of Mobil 1 was because of the PepBoys 'buy 3 get 3 free' coupons. Mobil 1 was $1.99 a quart and thats a deal I couldn't pass up.
If it wasn't for the coupons, I would have just bought Havoline.
The only reason why I have 60 quarts of Mobil 1 was because of the PepBoys 'buy 3 get 3 free' coupons. Mobil 1 was $1.99 a quart and thats a deal I couldn't pass up.
Advance Auto Parts is currently offering a rebate on a case of Havoline, bringing the price down to $1.28/qt. Limit one case per household.
Details: http://www.advanceautoparts.com/english/specials/specials.asp
Rebate form (PDF): http://advanceautoparts.rebatestatu...?GFmCPCipleTDvoqr8ijbVpXPb8sa5UVYRK7To8m4hZY=
The oil companies are still projecting future oil prices in the $3x/barrel range. This is important because they have to make decisions now, based on likely oil prices in the future. If they guess high, they lose; and if they guess low, they lose.
So, when you hear that cheap oil is gone for good, take it with a grain of salt. Long-term analysis favors the opinion that prices will settle back down at some point in the not-too-distant future.
- Glenn
So, when you hear that cheap oil is gone for good, take it with a grain of salt. Long-term analysis favors the opinion that prices will settle back down at some point in the not-too-distant future.
- Glenn
May not be pinging. Toyota 22re engines can have problems with the hydraulic timing chain tensioner on start-up, and make chain/knocking noises. I just sent my 88 4wd to the junk yard with major rust demons, and it made noise for years. Never hurt a thing. It was always happier using conventional 10w30.
[ February 03, 2006, 07:01 PM: Message edited by: Sumerduckman ]
[ February 03, 2006, 07:01 PM: Message edited by: Sumerduckman ]
Here's a hypothasis on the pinging issue.
When the engine is cold and the oil viscosity is relativly high the thicker oil helps with ring seal together with a cold intake charge due to cool cylinder head temps gives a slight increase in compression.
If your engine is a borderline pinger it may be enough to tip it over the top.As the engine warms up the oil viscosity drops and intake temp goes up and density down,so compression reduces slightly.No ping,maybe.
I don't know the cst at start up of the Havoline you are using but maybe its viscosity is slightly lower at start up and doesn't help with ring seal as much as the M1.
I know i've drawn a long bow here,but its only a post for you all to comment on.
The only other way i can think for oil to effect pinging is that if the crancase ventilation system allows more oil vapour into the intake this has the effect of lowering the point at which detonation will occur.
Does the M1 produce more oil vapour in the inlet than Havoline?
Look fwd to your thoughts.
Ciao
When the engine is cold and the oil viscosity is relativly high the thicker oil helps with ring seal together with a cold intake charge due to cool cylinder head temps gives a slight increase in compression.
If your engine is a borderline pinger it may be enough to tip it over the top.As the engine warms up the oil viscosity drops and intake temp goes up and density down,so compression reduces slightly.No ping,maybe.
I don't know the cst at start up of the Havoline you are using but maybe its viscosity is slightly lower at start up and doesn't help with ring seal as much as the M1.
I know i've drawn a long bow here,but its only a post for you all to comment on.
The only other way i can think for oil to effect pinging is that if the crancase ventilation system allows more oil vapour into the intake this has the effect of lowering the point at which detonation will occur.
Does the M1 produce more oil vapour in the inlet than Havoline?
Look fwd to your thoughts.
Ciao
I used to own a 1986 Toyota 4WD PU with the 22RE motor. I used Havoline 10W40 in it, and it would ping in the summer, even with premium fuel. After several years of this, I was finally able to get rid of the pinging by reducing the antifreeze concentration from 50% to 30%, and adding Redline Water Wetter to the coolant.
Raxen states:
"This truck has a carb, however ". Could be your pinging is totally unrelated to your oil change. IIRC, carbs have jets, and if your jets are dirty/clogged or mismatched to your altitude (you are in Utah), or if there has been some change in barometric pressure (hi to low pressure front or vice versa) when you changed your oil, or there was a change in your fuel, you very well could now have pinging. And it would be totally unrelated to your oil change.
Do you have another vehicle that you could perform the same regimen to see if that vehicle also has pinging?
I use to have Capri II V6 that was jetted, and I would occasionally get pinging in that car when there was a big change in humidity. Go figure.
"This truck has a carb, however ". Could be your pinging is totally unrelated to your oil change. IIRC, carbs have jets, and if your jets are dirty/clogged or mismatched to your altitude (you are in Utah), or if there has been some change in barometric pressure (hi to low pressure front or vice versa) when you changed your oil, or there was a change in your fuel, you very well could now have pinging. And it would be totally unrelated to your oil change.
Do you have another vehicle that you could perform the same regimen to see if that vehicle also has pinging?
I use to have Capri II V6 that was jetted, and I would occasionally get pinging in that car when there was a big change in humidity. Go figure.
Could it be as simple as M1 may be a better conductor of noise as well s heat? The "pinging" may have always been present and you just hear it with M1.
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