How healthy is your transmission fluid?

Ask the average motorist and it’s likely they will know how and where to check their oil and coolant level but ask about transmission fluid and they might not be so savvy.

src: automobilespoint.com

It’s not always immediately obvious how to check the health of your transmission fluid and indeed in recent years manufacturers have made it increasingly difficult for the end user to interact with the transmission at all unless you have the correct tools to get at the undercarriage of the vehicle. Should this be the case then we highly recommend that you allow your professional mechanic to perform any maintenance checks on your transmission fluid as you could risk voiding your warranty. If, however, you have a vehicle equipped with a dipstick under the bonnet for checking the transmission fluid then here are some things to look out for which may signal it’s time to book in for a fluid change or top-up.

More after the jump...

Rust Repair Tutorial

This week sees the launch of Granville's new Rust Repair Liquid. Now this stuff is the bee's knees, what can I say? It's easy to use, takes only 15mins to work its magic and also comes in a gel formulation for easy application on hard to reach and horizontal surfaces.

So let's take a look at how to use Granville Rust Repair Liquid and Gel...

More after the jump.

Antifreeze and Coolant 101

Antifreeze and coolant. They cause quite a bit of confusion for motorists who aren't in the know. In fact it's one of the most frequently asked topics put to the Tech Team here at Granville HQ. And it's no wonder that it causes folk to scratch their heads over it because they are essentially the same product - just with different functions.

Call it coolant and you're referring to, you guessed it, the stuff that keeps your engine cool and operating at the correct temperature. When you think about it, your engine is basically powered by a series of controlled explosion so it's bound to get hot under that hood!

The job of Antifreeze is to keep things just right - src: funnyjunk.com

Now, technically speaking, coolant can be just plain water but this alone wouldn't protect against extremes of temperature or corrosion. Add Antifreeze to this water and you solve this issue, protecting against corrosion, aiding heat transfer, preventing scale build up, and raising the boiling point and lowering the freezing point of the liquid.

Generally speaking the ratio to make coolant is 50:50 Antifreeze to water but you must check your User Manual for the specific dilution for your vehicle.

More after the jump.

What your oil is trying to tell you about the health of your engine

Frothy Oil
A good quality engine oil should not foam up because of the anti-foaming additives that are mixed with the product. There could be several reasons why your oil has foamed up. If your oil is bubbly or foamy but not discoloured then you may have overfilled the sump. The oil is essentially being churned and aerated by the crank and can cause a lot of damage very quickly.

src: forums.swedespeed.com

If the foam is lighter in colour this could be down to water or coolant contamination. If this is the case, then there is a chance you may have a leaking gasket head or a crack in the engine block.

Solution: If you think you may have overfilled with engine oil make sure you drain it off and refill the tank. If you see evidence of light coloured foam, see a professional mechanic as soon as you can.

More after the jump...

Jargon Buster: Translating your Oil Bottle

Grab your average bottle of motor oil off the shelf in your local retailer and you're confronted with a whole lot of jargon, acronyms and random numbers which will probably mean very little to you unless you're in the know. And let's face it, your owner's manual isn't much more help either. Sure it might give you a list of numbers and letters that translate into an oil spec that's suitable for your vehicle, but wouldn't you like to know what it all really means?

src: giphy.com

Do you know your 0w/20 from your 5w/40? What's the real difference between mineral and synthetic oil? ACEA? API? Well here's my jargon busting guide to translating your oil bottle.