Discussion
When I looked a couple of days ago they had 0w- and 5w- Mobil 1. Which you need depends on your cars age and the engines condition.
0w is recommended for most Porsches now, I believe, although I really need a 10w or maybe even a 15w synthetic, which wont ever sell in sufficient quantity for Costco to stock.
Im sure that youll find the information in the owners handbook.
0w is recommended for most Porsches now, I believe, although I really need a 10w or maybe even a 15w synthetic, which wont ever sell in sufficient quantity for Costco to stock.
Im sure that youll find the information in the owners handbook.
GC8 said:
When I looked a couple of days ago they had 0w- and 5w- Mobil 1. Which you need depends on your cars age and the engines condition.
0w is recommended for most Porsches now, I believe, although I really need a 10w or maybe even a 15w synthetic, which wont ever sell in sufficient quantity for Costco to stock.
Im sure that youll find the information in the owners handbook.
He might not have that with him whilst he is wondering around the Costco aisles!0w is recommended for most Porsches now, I believe, although I really need a 10w or maybe even a 15w synthetic, which wont ever sell in sufficient quantity for Costco to stock.
Im sure that youll find the information in the owners handbook.
GC8 said:
When I looked a couple of days ago they had 0w- and 5w- Mobil 1. Which you need depends on your cars age and the engines condition.
0w is recommended for most Porsches now, I believe, although I really need a 10w or maybe even a 15w synthetic, which wont ever sell in sufficient quantity for Costco to stock.
Im sure that youll find the information in the owners handbook.
Sorry, but your comments about 5W-40 or 10W-40 oils are utter nonsense. Both those oils are exactly the same viscosity (i.e. thick/thinness) at running temp (nominally 100 degrees C) as 0W-40. It's the '40' part that tells you they're the same at running temp. The only difference is how much the 3 oils thicken-up as they cool down. At 0 degrees C, the 5W will be thicker (and slower to get round your engine) than a 0W. The 10W will be thicker again than the 5W. All 3 are massively thicker when cold than when hot.0w is recommended for most Porsches now, I believe, although I really need a 10w or maybe even a 15w synthetic, which wont ever sell in sufficient quantity for Costco to stock.
Im sure that youll find the information in the owners handbook.
If you want an oil that is thicker when hot, you'd need a 0W-50 or 5W-50. Bear in mind that because car oiling systems use a pressure relief valve and positive displacement pump, you'll REDUCE the flow of oil around your engine at running temp by using a 50-weight oil. You may see marginally more pressure, but a bigger proportion of your oil will be going out of the relief valve - not into the business end of your engine to lubricate and cool.
You really are best to stay with what the designers of your engine recommend - there are far too many variables to play with oil grades.
Ian_UK1 said:
GC8 said:
When I looked a couple of days ago they had 0w- and 5w- Mobil 1. Which you need depends on your cars age and the engines condition.
0w is recommended for most Porsches now, I believe, although I really need a 10w or maybe even a 15w synthetic, which wont ever sell in sufficient quantity for Costco to stock.
Im sure that youll find the information in the owners handbook.
Sorry, but your comments about 5W-40 or 10W-40 oils are utter nonsense. Both those oils are exactly the same viscosity (i.e. thick/thinness) at running temp (nominally 100 degrees C) as 0W-40. It's the '40' part that tells you they're the same at running temp. The only difference is how much the 3 oils thicken-up as they cool down. At 0 degrees C, the 5W will be thicker (and slower to get round your engine) than a 0W. The 10W will be thicker again than the 5W. All 3 are massively thicker when cold than when hot.0w is recommended for most Porsches now, I believe, although I really need a 10w or maybe even a 15w synthetic, which wont ever sell in sufficient quantity for Costco to stock.
Im sure that youll find the information in the owners handbook.
If you want an oil that is thicker when hot, you'd need a 0W-50 or 5W-50. Bear in mind that because car oiling systems use a pressure relief valve and positive displacement pump, you'll REDUCE the flow of oil around your engine at running temp by using a 50-weight oil. You may see marginally more pressure, but a bigger proportion of your oil will be going out of the relief valve - not into the business end of your engine to lubricate and cool.
You really are best to stay with what the designers of your engine recommend - there are far too many variables to play with oil grades.
If you had been a little better brought up, then youd have stated that you disagreed and then explained why; rather than posting as you have.
Your post appears to be utter nonsense.
Ian_UK1 said:
Sorry, but your comments about 5W-40 or 10W-40 oils are utter nonsense. Both those oils are exactly the same viscosity (i.e. thick/thinness) at running temp (nominally 100 degrees C) as 0W-40. It's the '40' part that tells you they're the same at running temp. The only difference is how much the 3 oils thicken-up as they cool down. At 0 degrees C, the 5W will be thicker (and slower to get round your engine) than a 0W. The 10W will be thicker again than the 5W. All 3 are massively thicker when cold than when hot.
If you want an oil that is thicker when hot, you'd need a 0W-50 or 5W-50. Bear in mind that because car oiling systems use a pressure relief valve and positive displacement pump, you'll REDUCE the flow of oil around your engine at running temp by using a 50-weight oil. You may see marginally more pressure, but a bigger proportion of your oil will be going out of the relief valve - not into the business end of your engine to lubricate and cool.
You really are best to stay with what the designers of your engine recommend - there are far too many variables to play with oil grades.
This is far too simplistic, I suggest you read some of the more technical articles. The simplest answer is to quote Baz Hartech who probably knows these engines better than anyone and who replied to a similar post as follows:If you want an oil that is thicker when hot, you'd need a 0W-50 or 5W-50. Bear in mind that because car oiling systems use a pressure relief valve and positive displacement pump, you'll REDUCE the flow of oil around your engine at running temp by using a 50-weight oil. You may see marginally more pressure, but a bigger proportion of your oil will be going out of the relief valve - not into the business end of your engine to lubricate and cool.
You really are best to stay with what the designers of your engine recommend - there are far too many variables to play with oil grades.
- ***am not tribolgy expert and will not get drawn into arguments about oil - but the idea that oil thickens up when it gets hot is in my experience wrong. I think the claim is that it works as well as higher grade oil when hot - but this doesn't take into account that when bearings wear the lateral clearance is greater so the oil has less resistance to squeezing out the side of shells etc and therefore does not support the bearings as well. Similarly if the oil is a thicker grade it usually is thicker when hot and I have had my amateur ideas discussed with technical oil racing experts from Mobil and Castrol and both agree with my general view.******
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