I have seen a lot of people at this site talking about various motor oils and then say something to the effect, 'Yes, it is good oil, but I can't afford it.' One of the most expensive oils that people talk about at this site is Redline oil. I have never bought any, but I think it costs about $7.00 a quart. Conventional motor oil costs something like $1.00+ a quart. If your vehicle takes four quarts of oil, and you change the oil yourself, you pay $28.00 for the Redline oil, and $4.00+ for the conventional. Five quarts would be $35.00 and $5.00+. You can probably drive at least 7000 miles with the Redline and about 3000-4000 with the conventional. And by doubling the oil mileage you are reducing the cost of oil filters in half. If you had been using the conventional oil you are therefore saying 4 or 5 bucks during the time period that you normally would be changinf oil, plus the cost of an oil filter. Let us say that the oil filter is $5.00. If your vehicle uses four quarts of oil, you save 9 bucks-take that off the cost of the Redline ($28.00-9.00=$19.00). Five quarts ($35.00-10.00=$25.00). If you drive something like 14,000 miles a year, two Redline oil changes will cost $46.00 for four quarts, $70.00 for five quarts. But you will be doing fewer oil changes and using fewer oil filters, so the cost will actually be less then this. Are you telling me that you cannot afford $46.00 or $70.00 over the period of a year for oil chanes? We are leaving out the cost of oil filters right now, but fewer oil filters would be needed with longer oil changes for the Redline. Four conventional oil changes (just the cost of the oil) would be $16.00 for four quarts and $20.00 for five quarts. You would be paying out that amount anyway-unless you do not change your oil. So we are actually looking at an increased cost of $30.00 and $50.00. And remember, two less oil filters. It does not look to me that Redline would break the bank.