After putting Pennzoil HD30 in my mower, i searched and found this as a review on epinions dot com.....
I used Pennzoil in my first three cars. Changed the oil every 3000 miles like clockwork. Lifters and valves were knocking frequently. The timing gear and chain jumped the cogs at 60,000 mi on the third one, and my mechanic enlightened me. He said any oil pumped out of the ground in Pennsylvania has a high paraffin content (wax), that will coat the inside of the engine with sludge. He told me to use Texas or middle eastern oil - Shell, Havoline, Valvoline, etc., and it would clean the engine in two or three oil changes. Sooner if I used Rislone oil treatment/cleanout, which I did.
I'ved used Valvoline on eight cars since, about 700,000 miles total, and haven't had a knock or crankcase problem since. The last two cars I switched to synthetic due to the viscocity problems in cold weather in Michigan. Regular 10w/30 will not come out of the can at 20 deg below. Much easier starts with synthetic. Perhaps Pennzoil synthetic lacks the paraffin and is ok, but I haven't tried it because of below reasons.
Synthetic lasts from 15,000 to 25,000 between changes, but costs twice as much. You do the math. Its cheaper in the long run.
Add the fact that your engine turns over in cold weather much easier, and you'll find it saves wear and tear on your starter motor another $200 item, or more.
My boy was taking an economics course at college several years ago. The professor began talking abour classic cases of companies selling an inferior product successfully using aggressive marketing. He used Pennzoil as an example, and my boy chuckled as he remembered what I had told him.
I have had two co-workers who needed engine replacements at about 100 to 120,000 miles, and when I asked them what oil they used, well....
Seems ironic that Pennzoil is now claiming in their ads that they have an additive that will clean out the sludge in your engine. Well, how did it get there?
Its hard sometimes to admit when you've made a bad choice, but its even harder to cough up $4000 for a replacement engine. I hope somebody reads this and makes a change for the better.
I used Pennzoil in my first three cars. Changed the oil every 3000 miles like clockwork. Lifters and valves were knocking frequently. The timing gear and chain jumped the cogs at 60,000 mi on the third one, and my mechanic enlightened me. He said any oil pumped out of the ground in Pennsylvania has a high paraffin content (wax), that will coat the inside of the engine with sludge. He told me to use Texas or middle eastern oil - Shell, Havoline, Valvoline, etc., and it would clean the engine in two or three oil changes. Sooner if I used Rislone oil treatment/cleanout, which I did.
I'ved used Valvoline on eight cars since, about 700,000 miles total, and haven't had a knock or crankcase problem since. The last two cars I switched to synthetic due to the viscocity problems in cold weather in Michigan. Regular 10w/30 will not come out of the can at 20 deg below. Much easier starts with synthetic. Perhaps Pennzoil synthetic lacks the paraffin and is ok, but I haven't tried it because of below reasons.
Synthetic lasts from 15,000 to 25,000 between changes, but costs twice as much. You do the math. Its cheaper in the long run.
Add the fact that your engine turns over in cold weather much easier, and you'll find it saves wear and tear on your starter motor another $200 item, or more.
My boy was taking an economics course at college several years ago. The professor began talking abour classic cases of companies selling an inferior product successfully using aggressive marketing. He used Pennzoil as an example, and my boy chuckled as he remembered what I had told him.
I have had two co-workers who needed engine replacements at about 100 to 120,000 miles, and when I asked them what oil they used, well....
Seems ironic that Pennzoil is now claiming in their ads that they have an additive that will clean out the sludge in your engine. Well, how did it get there?
Its hard sometimes to admit when you've made a bad choice, but its even harder to cough up $4000 for a replacement engine. I hope somebody reads this and makes a change for the better.
