Quick Answer: Will Thicker Oil Stop Piston Slap?

Does piston slap burn oil?

While the piston slap is annoying, it does often not cause much damage to the car, and you can continue driving your car for miles if it’s not too worn or burns too much oil.

If this is the case, you will need to get a new and re-bored piston..

What does a piston slap sound like?

A hollow, muffled, almost bell-like sound is usually piston slap. This condition is caused by a piston rocking back and forth within its cylinder. Continuous piston slap means the engine needs service; however, if you only notice this sound when the engine is cold, it is likely not serious.

What is the most common cause of piston slap?

“Piston slap is generally caused when the cold running clearance (piston-to-wall clearance) is large enough that when the piston rocks from side to side in the bore it “slaps” the side of the cylinder and causes noise,” explains JE Pistons’ Clayton Stothers.

Will synthetic oil burn less?

Synthetic oil will actually stay thicker in hot conditions. Myth: Synthetics cause cars to use more oil. Untrue. … Unless an engine is a real oil burner, it will burn less synthetic than regular.

Will thicker oil increase compression?

STP Oil Treatment Compression is increased in STP cars because the thicker layer both reduces metal-to-metal friction, and provides a better seal between the piston rings and the cylinder wall.

Will thicker oil stop oil consumption?

A lot of oil-burning takes place because an engine’s piston rings are worn out, and thicker oil won’t fix that. … They also count on low-viscosity oils to reduce friction and drag (the work of simply moving the engine parts through thicker oil), which improves mileage.

How long will an engine last with piston slap?

As other posters have state, some engines will run over 100,000 miles with that condition, and others will self destruct in 30,000-40,000 miles.

Can I drive on a knocking engine?

The point is that yes, indeed, you can drive a car with a knocking engine and the oil light on. … Driving gently might get you a few more miles, maybe enough to get home or at least to an off ramp if you are on a freeway. On rare occasions in old cars, an engine may have a mild knock and still run hundreds of miles.

Does piston slap go away when warm?

Like most in it’s engine family, the 5.3 liter in my ’03 Suburban has some light piston slap when it’s cold. Pennzoil Ultra 5w-30 minimizes the slap and it goes away when warm. Try some Ultra if you can find it.

What an engine knock sounds like?

It’s your engine, letting you know there’s a problem somewhere under the hood. If the smooth rumble you’re used to coming from your engine is replaced with a repetitive tapping or pinging sound that becomes louder and faster as you accelerate, that’s a classic sign of engine knock.

How do you fix high oil consumption?

New valve guide seals can drastically reduce oil consumption. I have seen older high mileage engines go from using a quart of oil every 500 miles to using no oil between oil changes (3000 miles) by simply replacing the valve guide seals!

Is Thicker oil better for older engines?

A: Yes. This is a practical method to improve oil pressure in an older, high-mileage engine. The slightly thicker oil film from the heavier base weight oil — 10W — can help protect worn engine bearings as well.

What helps piston slap?

Piston slap can only be fixed with an engine rebuild. The piston is rocking in the bore due to excessive clearance. Spark knock is preignition , that means that the combustion in the cylinder is happening before the piston is at the top of it’s travel and therefore “rattling” or knocking.

Will piston slap damage engine?

Is Piston Slap Bad? If you let piston slap occur for too long, it is very harmful to your engine. The longer you wait to fix this issue, the more noticeable the problem will become. Your cylinder walls and piston clearance will continue to get higher.

Is piston slap normal?

A: If the noise is indeed piston slap then this is nothing to be alarmed about. There is certainly no need to replace the engine. The bottoms of the pistons (skirts) strike the sides of the cylinders as the pistons reverse direction. After warm-up, they fit snugly.