10% to 25% off contacts.

Special Sections
-- Baby Boomers -- Family -
-- Green -- Home and Auto --
-- In Critical Condition -- Lifestyle --
-- Just Starting Out -- Money --




The Car Care Clinic

Synthetic Oils

by Bob DeP.
AskBob@stretcher.com



share your thoughts
about frugal living
at TDS Community
 
Web Stretcher.com

Subscribe to Our Money Saving Newsletter

Also In This Week's Issue

Money games for kids

10 hot toys for under $20

How repossession affects credit score

Marriage doesn't wipe out credit history

Visit our Library

More Stories About:

Automobiles

Babies

Children

Debt

Groceries and Food

Making Extra Money

Natural Living

One Income Families

Weddings

Advertise on this site

Hi,
Synthetic motor oil manufactures (Amsoil in particular) recommend very long "drain intervals" for their products when used with quality oil filters. You may, for instance, change a synthetic oil one time in 20,000 miles (with one oil filter change along the way)while changing a petroleum based oil four to six times (assuming drain intervals from 3,000 to 5,000 miles). Hmm, this seems like a great way to save time and, according to my calculations, save money.

What does your automotive expert think about synthetic motor/transmission/gear oils? I do understand than one must stay w/in manufactures recommendations on oil changes for those vehicles still under warranty.
Jim and Mary

Jim and Mary,
Well, synthetic oils have come a long way since their inception. You may remember back when Mobil 1 was the only synthetic on the market. It was also said that you should NOT mix synths with petroleum based motor oils. Well those days probably have passed (like the days when you could not rotated your radial tires left to right). There are some oil manufactures that are actually making a blend of petroleum and synths (Valvoline, I believe). As for their claims to the extended oil life, this is what I recommend:

  1. If they say the oil has a life of 50,000, cut it in half to 25,000.

  2. Change the oil filter at the same interval as the manufacture says (every 3 to 5 thousand). You see the extended life of the oil really has nothing to do with the sand and grit that is getting into your engine from the outside. Without a clean filter, these particles might make it into your motor or clog the filter and starve it for oil.

The one benefit that I have seen for the synths is that when you are the responsible party in your family for taking care of the cars and your other half forgot to tell you that it was due to be changed 10,000 miles ago, then at least you have some protection. The synths generally have a longer life because they resist thermal breakdown or heat better than non synths...

My personal advice is to change the oil every 3000 miles (5000 at the absolute most)! The oil is your engine's life blood... keep it clean, and you will enhance its life and it will most likely give you a long service life. Now, if one has a turbo charged or a super charged engine, then I would reduce that number to 2500 miles.

As far as synth tranny fluids, these are relatively new. There is a new product out there that is synthetically made that replaces the whale oil that used to be in the fluid way back when (early '70) This additive increases the life of the tranny fluid. As far as other gear oils, well then they don't normally get changed that often. The differential oil is usually changed about every 50,000. One reason it lives so long is because there is no heat problem like in the engine oil. So a synth there may not justify the added expense. Eventually though, they will need to stop making oil from petroleum based products. But, that wont happen for a long while.
Good Luck!
Drive Safely!
Bob, The Auto Answer Man


If you have a question for Bob send it to: AskBob@stretcher.com. He's able to answer many of them personally and we'll include the best questions in future issues of The Dollar Stretcher.

Take the Next Step

  • Reduce the cost of your gasoline with a 'gas card'. You can compare them here.

Do you have a time or money saving idea that wasn't included in this article? Please send it to tips @stretcher.com. We get the best ideas from our readers!

If you liked this article sign up for our free eNewsletter Surviving Tough Times Do it today and we'll give you our ebook featuring over 200 ways to save on groceries (a $19.95 value).


Follow The Dollar Stretcher on Twitter.


I Would like to:

Would you like to tell a Frugal Friend about this article? Just fill out their email address and your name and we'll send them the URL.
Enter your friend's email:
Enter your name:
Enter a message to your friend:

Copyright 1996 - 2009 "The Dollar Stretcher, Inc.". All rights reserved unless specifically noted.

Write to the Dollar Stretcher at:
Dollar Stretcher
PO Box 14160
Bradenton
FL 34280-4160

941-761-7805 voice
941-761-8301 fax


"The Dollar Stretcher, Inc." does not assume responsibility for advice given. All advice should be weighed against your own abilities and circumstances and applied accordingly. It is up to the reader to determine if advice is safe and suitable for their own situation.